SAND REPORT

SAND2002-2019 Unlimited Release Printed July 2002 Acronyms, Initialisms, and Abbreviations

Debbie Johnson, Compiler

Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550 Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under Contract DE-AC04-94AL85000. Approved for public release; further dissemination unlimited.

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Issued by Sandia National Laboratories, operated for the United States Department of Energy by Sandia Corporation.

NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represent that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government, any agency thereof, or any of their contractors or subcontractors. The views and opinions expressed herein do not necessarily state or reflect those of the United States Government, any agency thereof, or any of their contractors. Printed in the United States of America. This report has been reproduced directly from the best available copy. Available to DOE and DOE contractors from

U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831 Telephone: (865)576-8401 Facsimile: (865)576-5728 E-Mail: reports@adonis.osti.gov Online ordering: http://www.doe.gov/bridge

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SAND2002-2019

Unlimited Release July 2002

Supersedes SAND89-0217

Printed April 1995

Acronyms, Initialisms, and Abbreviations

Debbie Johnson, Compiler Creative Arts Department

Sandia National Laboratories PO Box 5800

Albuquerque, New Mexico 87185-0619

Abstract This document contains an updated list of common acronyms, initialisms, and abbreviations used at Sandia. It will be published in an electronic format only. It can be retrieved from HTTPS://wfsprod01.sandia.gov/groups/srn-uscitizens/documents/document/wfs048643.pdf

Click on the “find” button in the Adobe Acrobat toolbar to search for a word or acronym. An alphabetical index is available in the Bookmarks screen to expedite searches. If readers of this document want to add an unclassified acronym or correct an existing one, please send an email to CreativeArts@sandia.gov. All changes will be reviewed by Classification prior to publication of a new version. A B C D E F G H

I J L K M N O P Q

R S T U V W X Y Z

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An acronym is a combination of letters that can be pronounced as a word. An initialism is an unpronounceable combination of letters. General Avoid overwhelming your reader with acronyms and initialisms.

An acronym is an abbreviation that is formed by combining the first letter or letters of several words. Acronyms are pronounced as words. Examples include:

modem = modulator and demodulator EPCOT = Experimental Prototype Community of Tomorrow NATO = North Atlantic Treaty Organization

An initialism is an abbreviation that is formed by combining the initial letter of each word in a multiword term. Initialisms are pronounced as separate letters. Examples include:

CRT = cathode ray tube GUI = graphical user interface WFO = work for others

When using an acronym or initialism for the first time in text, enter the full phrase in its expanded version followed by the abbreviated form in parentheses. Example: Sandia National Laboratories (SNL). In a short report, one expanded version is sufficient. However, in a lengthy report, you may want to repeat the expanded version in a later section to refresh the reader’s memory, followed by parentheses.

Plurals Form the plural of an acronym or initialism by adding s, as in PMFs. Use the apostrophe only when it may be confusing, as in Kd’s.

Using a or an Acronyms: The indefinite article to be used with an acronym is determined by the initial sound of the “word.” Examples: a FORTRAN program, or an Ada programmer.

Initialisms: The indefinite article to be used is determined by the initial sound of the initialism’s first letter. If the first letter has a vowel sound use “an,” as in “an SNL employee.” If it has a consonant sound, use “a,” as in “a WFO proposal.”

Capitalization Capitalize acronyms; do not use periods. The only exceptions are those acronyms that have become accepted as common nouns, which are written in lower case. Examples: NASA, HUD, laser, scuba.

Initialisms may be either upper or lower case. In general, do not use periods when they are in uppercase.

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List of Acronyms, Initialisms, and Abbreviations

A a1. atto or atto- (prefix indicates 10-18) 2. a unit of area equal to 100 m2 (used mainly in agriculture) Aampere (also written as amp) A or Åangstrom, a unit of length (10-10) used primarily to express wavelengths of optical spectra; also known as tenthmeter aAabsolute ampere; also, abampere AA1. atomic absorption 2. affirmative action 3. alcoholics anonymous (a Sandia support group) 4. assistant administrator AAAPaccelerated access authorization program AAASAmerican Association for the Advancement of Science AABCAssociated Air Balance Council AABLadvanced atmospheric burst locator AACaffirmative action compliance AACGAmerican Association for Crystal Growth AADCPArmy Air Defense Command Post AACSairborne activity confinement system AAFBAndrews AFB AAFCEAllied Air Forces, Central Europe (NATO) AAIabbreviation, acronyms, and initialisms AAMair-to-air missile

AANCAging Aircraft Nondestructive Center (sometimes written as Aging Aircraft NDI Validation Center) AAOAmarillo Area Office (DOE) AAP1. affirmative action plan (or program) 2. adoption assistance program 3. antenna aperture package AASMadvanced air-to-surface missile AASPadministrative assistant scholarship program AAUaccelerated aging unit AAWanti-aircraft warfare AB1. airburst 2. as-builts abampabsolute ampere ABAQAlbuquerque/Bernalillo County air quality ABC1. advanced biomedical capsule 2. Atomic biological, and chemical (warfare) 3. Advanced Battery Consortium A-BC/AQCBAlbuquerque-Bernalillo County/Air Quality Control Board ABFadvanced bomb family ABITEantenna built-in test equipment ABL1. atmospheric burst locator 2. armored box launcher 3. airborne laser ABLEAffiliated Black Laboratory Employees ABLSarmored box launcher system ABMantiballistic missile ABOSFautomatic burnout safety factor

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ABRSadvanced ballistic reentry system ABRVadvanced ballistic reentry vehicle absabsolute ABSautomatic block signaling AB/SBairburst/surface burst ABWAir Base Wing ac or ACalternating current (variable polarity) aCabcoulomb (electromagnetic unit) ACaccess control ACAadult children of alcoholics (a Sandia support group) ACADadvanced computer-aided design ACARSaccess control and release system ACBMasbestos-containing building material ACC1. Alarm Control Center 2. Air Component Command 3. Air Combat Command (The ACC has combined the former TAC and SAC into one command.) 4. abnormal condition control ACCDaircraft compatibility control drawing ACCELautomated circuit card-etching layout ACCORDnew generation of software tools for mechanical design and manufacturing automation ACCS1. Auxiliary Central Control Station 2. Army Command and Control System ACD1. armed convoy defenders 2. automatic call distribution AC&Dalarm communication and display

ACDAArms Control and Disarmament Agency ACE1. access control element 2. access control electronics 3. automatic checkout equipment 4. alternate common equipment 5. Atmospheric Compensation Experiment 6. Allied Command Europe 7. almanac, connectivity, and ephemeris Ac-Emactinium-emanation ACERSAmerican Ceramic Society ACESatmospheric combustion exhaust simulator ACFaccess control facility acfmactive cubic feet per minute ACH1. automated clearing house 2. air changes per hour ACHPAdvisory Council on Historic Preservation ACIA1. asynchronous communications interface adapter 2. asynchronous communications interface alarm ACISAlan, Charles, Ian System (Part of the CAD System) ACL1. access control list 2. alternative concentration limit ACM1. Association for Computing Machinery 2. advanced conventional munitions 3. advanced cruise missile 4. asbestos-containing material ACMVadvanced cruise missilevariant ACNFSAdvisory Committee on Nuclear Facility Safety AC/NUCAssistant Controller, Nuclear (in Atomic Weapons Establishment, England)

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ACOadvance change order ACO(UK)Atomic Coordinating Office, United Kingdom ACP1. asbestos-containing product 2. (Albuquerque) Associates Concerns Program ACREautomatic checkout and readiness equipment ACRRannular core research reactor (upgraded acronym for ACPR) ACRSAdvisory Committee on Reactor Safeguards ACS1. advanced computer system 2. altitude control system 3. automated cartridge system 4. advanced coded switch 5. access control system 6. approved calibration system A&CSaccess and clearance system ACSMalternate computer security manager ACSOassistant computer Security Officer ACTadvanced circuit technology ACTIadvanced computational technology initiative AcUactinouranium (nuclear physics) ACUautomatic calling uni ACVarmored combat vehicle ACWEGadvanced conventional weapons engineering group adadjoint AD1. arming device 2. advanced development 3. aerodynamic diameter

A.D. anno Domini (in the year of the Lord) A/D1. analog to digital (see ADC) 2. arm/disarm Adaa high order computer language being developed by the Department of Defense ADA1. arming device assembly 2. Americans with Disability Act ADACalarm display and assessment console ADAMadvanced database and modeling ADAPTAdvanced Design and Production Technologies ADAS1. automatic data analysis system 2. alarm display and assessment system ADC1. analog to digital converter 2. Air Defense Command 3. atomic demolition charge 4. authorized derivative classifier ADCOMAerospace Defense Command ADCONAddress Constant (computers) ADDarm/disarm device AD&Daccidental death and dismemberment ADDS1. automated drawing data system 2. automated design definition system ADEA1. Army Development and Employment Agency 2. Age Discrimination Employment Act ADEPadvanced development earth penetrator ADF1. adaptive digital filtering 2. automatic direction finder ADI1. asynchronous data interface 2. acceptable daily intake ADIZair defense identification zone

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ADL1. alarm data length 2. Advanced Devices Laboratory, Inc. ADM1. atomic demolition munition 2. action description memorandum 3. atomic description memorandum ADNammonium ditramide ADNETadministrative network ADP1. automated (or automatic) data processing 2. advanced development program 3. adaptive digital predictor 4. anticipated disability program ADPAAmerican Defense Preparedness Association ADPDautomated dry powder dispenser ADPEautomated data processing equipment ADRalternative dispute resolution ADRCARC digitized raster graphic ADROITcode for analyzing dispersal risk occurring in transportation ADROVadvanced development and remotely operated vehicle ADS1. automatic data system 2. access delay system 3. ALCOA Defense System (obsolete; now McDonnell Douglas Technologies, Inc.) 4. activity data sheet 5. automatic depressurization system ADSIDair-delivered seismic intrusion detector ADSNAFTAC distributed subsurface network ADSSactivated denial security system ADTCArmament Development and Test Center

ADT&Eadvanced development test and evaluation ADVICEadvanced image communication and enhancement AEallowable emissions A-E or A/Earchitect and engineer AEAAtomic Energy Act AEA-UKAtomic Energy Authority, United Kingdom AECAtomic Energy Commission (obsolete; now the Department of Energy) AECSadvanced entry control system AEDadvance electronic design AEDAatomic energy defense activities AEDCArnold Engineering Development Center (USAF) AEManalytical electron microscope AEMSacoustic emission monitoring service AEODanalysis and evaluation of operational data (NRS) AEPantenna electronics package AEPDSautomated EAM processing and dissemination system AEPTadvanced extraction process technology AERadvance engineering release AES1. acceptable equipment system 2. Auger electron spectroscopy 3. advanced exterior sensor 4. advanced encryption standard

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AETaccelerated environmental test AEUaccelerated environmental unit afaudio frequency aFattofarad (replaces abfarad) AFaugmentation force A&F1. arming and firing 2.arming and fuzing AFAarming and fuzing assembly AFAPartillery fired atomic projectile AFASadvanced field artillery system AFATDSadvanced field artillery tactical data system AFATLAir Force Armament Test Laboratory AFBAir Force Base AFBCatmospheric fluidized-bed combustion AFC1. automatic frequency control 2. automatic flight control AFCEAArmed Forces Communications and Electronics Association AFCENTAllied Forces, Central Europe (NATO) AFDarming and fuzing device AFEantiferroelectric AFEWCAir Force Electronic Warfare Center AF&Farming, fuzing, and firing AFFFaqueous foam-forming fluid AFGLAir Force Geophysics Laboratory

AFITAir Force Institute of Technology AFLC/NSOAir Force Logistics Command/Nuclear Support Office AFLCRAir Force Logistics Command Regulation AFMCAir Force Materiel Command AFNORTHAllied Forces Northern Europe AFOCAir Force Operations Center AFOSPAir Force Office of Security Police AFP1. approved funding program 2. authority for payment AFPLAir Force Phillips Laboratory AFR1. Air Force Regulation 2. away from reactor (unit modifier) AFRPLAir Force Rocket Propulsion Laboratory AFSarming and fuzing system AFSATCOMAir Force Satellite Communications AFSCAir Force Systems Command AFSCRAir Force Systems Command Regulation AFSDAir Force Space Division AFSMCAir Force Space and Missile Systems Center AFSOUTHAllied Forces Southern Europe (NATO) AFSPACECOMAir Force Space Command AFSRBArmy Fuze Safety Review Board

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AFSSDAir Force Space Systems Division AFSTCAir Force Space Technology Center AFTa file transfer AFTACAir Force Technical Applications Center AFTECAir Force Test and Evaluation Center AFTFalert fire team facilities AFVarmy family of vehicles AFWLAir Force Weapons Laboratory (now Air Force Phillips Laboratory) AGARDadvisory group for aerospace research and development AGBautomated glovebox bagout AGCautomatic gain control AGEaerospace ground equipment AGEXabove ground experiment AGLabove ground level AGMair-to-ground missile AGNSAllied General Nuclear Services AGOVacid gases/organic vapors AGPaccelerated graphics port AGRadvanced gas-cooled reactor AGSadvanced guidance set AGSPauthorized ground station personnel AGTaboveground test AGVautomated guided vehicle

AGVTadvanced ground vehicle technology AGZactual ground zero aHabhenry Ahampere hour AHAMSautomatic hardness assurance monitoring system AHERAAsbestos Hazards Emergency Response Act AHJauthority having jurisdiction AHManti-helicopter mine AHPanalytic hierarchy process AH-PCRCArmy High Performance Computing Research Center AHSAmerican Helicopter Society AHUair handling unit AI1. Atomics International 2. artificial intelligence A/Iaccident investigation AIA1. Army Intelligence Agency 2. automatic incident action 3. Automated Imaging Association AIAAAmerican Institute of Aeronautics and Astronautics AIAAMadvance-interrupt (or intercept) air-to-air missile AIBanti-intrusion bar AICacceptable intake for chronic (exposure) AICBManti-intercontinental ballistic missile AIChEAmerican Institute of Chemical Engineers

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AICPAAmerican Institute Certified Public Accountants AICUZair installation compatible use zone AIDS1. adaptive intrusion data system 2. automated information distribution system AIEacceptance inspection equipment AIEEAmerican Institute of Electrical Engineers AIFIautomatic in-flight insertion AIFVarmored infantry fighting vehicle AIHAAmerican Industrial Hygiene Association AIIDAssociation for Information and Image Management AIMAccident Investigation Manual AIMEAmerican Institute of Metallurgical (and Petroleum) Engineers AIMS1. assessment information management system 2. authenticated item monitoring system AIPAmerican Institute of Physics AIRAPTInternational Association for the Advancement of High Pressure Science and Technology (American Translation) AIRSadvanced inertial reference sphere (missile guidance) AIS1. automatic intercept system 2. administrative information systems 3. adventures in super computing (program) 4. acceptable intake for subchronic (exposure) AISESAmerican Indian Science and Engineering Society

AITadvance information technology AIUarmament interface unit AKadaption kit A-Kanode/cathode akaalso known as AKMmodel designation for the Soviet assault rifle Alaluminum (chemical symbol) AL1. Albuquerque Operations Office(DOE Field Office; use DOE/AL) 2. action level ALAPas low as practicable ALARAas low as reasonably achievable ALASautomated logistical analysis system ALBM1. air-launched ballistic missile 2. air, land, and battle management ALBURTAlbuquerque budget reform task ALCadvanced landfill cover ALCCAirborne Launch Control Center ALCDadvanced landfill cover demonstration ALCMair-launched cruise missile ALDRAbstracts of Limited Distribution Reports (a TIC publication) ALDSautomatic lighting detection system ALEArbitary Lagrangian Eulerian ALEGRAcode being tested on the Paragon system (Physics) AlGaAsaluminum gallium arsenide

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ALGOLalgorithmic language (computers) ALIannual limit on intake AL-KAOAlbuquerque (Operations Office)/Kirtland Area Office ALNadaptive learning network ALOair liaison officer ALOEanalysis of local oriented edges (software developed by SNL for breast-cancer detection) ALPFadaptive low-pass (electrical) filter ALSadvanced light source alt or ALT1. altitude 2. alternator 3. alteration 4. altimeter ALTLappraisal logistics team leader ALUarithmetic-logic (or logical) unit ALVautonomous land vehicle a.m.ante meridiem (before noon) A/mamperes per meter Am1. americium (chemical symbol) 2. ammonium (chemical symbol) AM1. amplitude modulation (electrical) 2. asbestos management A/mamperes per meter AMA1. automatic message accounting (computers) 2. administrative management activity 3. American Medical Association AMACaircraft monitor and control AMACSalarm multiplexer communications system (computers) AMADactivity mass aerodynamic diameter

AMC1. advanced maintenance concept 2. Army Materiel Command 3. Army Missile Command AMCOAdministrative Management Committee (or Council) (SNL) AMCSalarm multiplexer communications system AMDadvanced micro devices AMECadvanced materials processes for economics development AMEFAgile Manufacturing Enterprise Forum AMENDSArmy MICOM electronic notarized document system AMEXAmerican Express AMHautomated message handler AMIadvanced manufacturing initiative AMIPArmy model improvement program AMMautomated maintenance management AMMPECadvanced materials and manufacturing processes for an economic competitiveness AMMSautomated maintenance and management system AMO1. Albuquerque Microelectronics Operations (formerly Bendix Albuquerque Operations) 2. aerial measurement operation ampampere (also written as A) AMPLAdvanced Manufacturing Processes Laboratory (formerly the Process Development Laboratory)

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AM-PMamplitude modulation/phase modulation AMPSairborne multisensor pod system AMRAtlantic Missile Range AMRAAMadvanced, medium-range, air-to-air missile AMS1. assets management system 2. aerial measuring system 3. American Society for Metals AMSAAArmy Materiel System Analysis Activity AMSLabove mean sea level AMT1. advanced munitions technology 2. asbestos management team 3. advanced manufacturing technology amuatomic mass unit (American Institute of Physics) Anactinon (chemical symbol) ANCAerojet Nuclear Corporation ANDadvanced nuclear demolition ANDESantinuclear demonstrators ANFOammonium nitrate and fuel oil ANIautomatic number identification ANL1. Argonne National Laboratory 2. Aberdeen National Laboratory ANL-EArgonne National Laboratory East (Chicago) ANL-WArgonne National Laboratory West (at INEL) ANMCAmerican National Metric Council ANNartificial neural network

ANS1. American Nuclear Society 2. aerospace nuclear safety ANSCautomated nuclear survivability criteria ANS-ENSAmerican Nuclear Society/ European Nuclear Society ANSIAmerican National Standards Institute ANSPadvanced nuclear systems and projects ANTadvanced nosetip test Anti-Canti-contamination ANWDalphanumeric wall display ANWSSArmy nuclear weapons storage site AO1. auxiliary office 2. action officer AOA1. angle of attack 2. as-ordered agreement 3. airborne optical adjunct AOC1. area of concern 2. area of contamination 3. administrative order on consent AOIand-or invert (computers) AORacknowledgment of receipt AOSSautomated office support system AOTallowed outage time AP1. asbestos phenolic 2. Associated Press 3. action plan 4. administrative procedure APACHEadvanced parallel chemistry APARautomated plutonium recording APASautomated plutonium assay system APBAactuator and pulse battery assembly

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APC1. armored personnel carrier 2. automated PAL controller APCHSautomated PAL code handling system APCVDatmospheric pressure chemical vapor deposition APD1. advanced planning document 2. Albuquerque Police Department APFassigned protection factor APGAberdeen Proving Ground (Maryland) APH(Fort) Apache Hill, Virginia APHAAmerican Public Health Association API1. American Petroleum Institute 2. atmospheric pressure ionization 3. associated particle imaging 4. application programming interface 5. axial power indicator APL1. Advanced Physics Laboratory 2. Applied Physics Laboratory APM1. appraisal project manager 2. axial power monitor approxapproximate (used only in tabulations and figures) APR1. airborne profile recorder (see TPR) 2. action plan requirement A-Primedagility primed: agile product realization for innovative electromechanical devices APRWacquisition planning requirements worksheet APS1. American Physical Society 2. active protection system 3. accelerated procurement system

APSAHDadaptive processor, seismic acoustic helicopter detector APSLAlbuquerque Primary Standards Laboratory (DOE) APSPIDadaptive processor, seismic personnel intrusion detector APT1. Accelerated Production of Tritium 2. Alliance for Photonic Technology 3. Automatic Programming Tool (computers) AQAPacceptance and quality assurance provisions AQCAAir Quality Control Act AQCRair quality control regulation (Bernalillo County) AQESair energy study AQLacceptable quality level AR1. annual report 2. as required 3. administrative requirement A&Rappraisal and review ARA1. applicable or relevant and appropriate (requirement) 2. airborne radioactivity area ARACatmospheric release advisory capability ARBNArmy battalion ARC1. Acquisition Review Committee 2. accident resistant container 3. Archi-tectural Research Consultants ARCCCAccident Response Capability Coordinating Committee ARCUSArctic Research Consortium of the US ARDArmy readiness date

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ARDECArmy Research and Development Engineering Center (Picatinny Arsenal, NJ) ARDUadvanced radiation (detection capability) data unit AREaerothermal reentry experiment ARES1. advanced reentry system 2. advanced railroad electronics system ARFaugmentation reserve force argargument ARGaccident response group ARHantiradiation homing ARI1. Army Research Institute 2. alternate rod insertion ARIELAdvanced Radar Image Exploitation Laboratory ARL1. Army Research Laboratory 2. acceptable reliability level 3. Aerospace Research Laboratories ARMatmospheric radiation measurement ARMMSAccident Response Mobile Manipulator System ARMS1. aerial radiological measuring system (Army) 2. Armor School (Army) AROafter receipt of order ARODairborne remotely operated vehicle ARPalarm response procedure ARPA1. Archaeological Resources Protection Act (1979) ARRISactive rate reducer and inflation system

ARSadvanced reactor safety ART1. armed response team 2. alarm response team 3. airborne response team 4. arsenal release and transport program ARTACApplied Research and Technical Activity Committee AR&TDadvanced research and technology development ARTIadvanced rotorcraft technology integration ARTY FDCArtillery Fire Direction Center (Army) aSabsiemen (formerly abmho) Asatmosphere (standard) AS1. airspeed 2. antenna sites 3. Allied Signal (BKC) 4. aviation safety 5. Active stockpile ASA1. American Standards Association (obsolete; now USA Standards Institute) 2. administrative staff associate ASAP1. as soon as possible 2. advanced seismic array program ASARCArmy System Acquisition Review Council ASASall source analysis system ASATantisatellite asbapostilb (also known as blandel) ASBArmy Science Board ASBDUAdvanced System B Data Unit ASCABRES shape charge ASCEAmerican Society of Civil Engineers

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ASCIaccelerated strategic computing initiative ASCIDAUTODIN satellite interface compensation device ASCIIAmerican standard code for information interchange (computer program) ASCOTatmospheric studies in complex terrain ASD1. adversary sequence diagram 2. Aeronautical Systems Division (Air Force) 3. Assistant Secretary of Defense ASDPAssistant Secretary for Defense Programs ASE1. antenna shield enclosure 2. applicant system enhancement AS&EAmerican Science and Engineering ASECApplied Solar Energy Corporation ASEMAssistant Secretary for Environmental (Restoration and Waste) Management ASHRAEAmerican Society of Heating, Refrigerating, and Air Conditioning Engineers ASICapplication-specific integrated circuit ASIGAlbuquerque special interest group AS/KCD or AS/KCPAllied Signal/ Kansas City Division (or Kansas City Plant) (see also BKC and KCD) ASM1. air-to-surface missile 2. adversary sequence modeling 3. American Society for Metals ASMDanti-ship missile defense ASMEAmerican Society of Mechanical Engineers

ASMSadvanced strategic missile systems ASNTAmerican Society of Nondestructive Testing ASOAdministrative Support Office ASOCAir Support Operations Center ASP1. automated signal processor 2. accident sequence precursor ASQCAmerican Society for Quality Control ASRanelastic strain recovery ASRAAMadvanced, short-range, air-to-air missile ASROCanti-submarine rocket ASSEAmerican Society of Safety Engineers ASSESSanalytic system and software for evaluating safeguards and security ASSISTautomated system security incident support team (DoD) ASSPadvanced small-site program assyassembly AST1. airborne surveillance testbed 2. above-ground storage tanks ASTM1. American Society for Testing Materials 2. American standard for test methods ASTX(battery-powered sensor/ transmitter) ASVadaptive suspension vehicle ASW1. anti-submarine warfare 2. air-to-surface weapon (see ASM) ASWATair solid waste assessment test asymasymmetric

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atatomic at.%atomic percent At1. ampere-turn 2. astatine (chemical symbol) AT1. advanced technology 2. applied technology 3. armored tractor ATAautomatic target acquisition ATACMSArmy Tactical Missile System ATAFAllied Tactical Air Force (NATO) ATBMadvanced tactical ballistic missile ATBMPArmy technology base master plan ATCassembly test chip ATDadvanced technology demonstration ATE1. automatic test equipment 2. all-terrain equipment ATESautonomous targeting and engagement system ATFDabsolute time-firing device ATFESArmy tactical frequency engineering system ATISair transportable instrumentation shelter ATLautomatic tape library atmatmosphere (a unit of pressure equal to 1.013250 x 106 dynes/cm2) At/mampere-turn per meter ATM1. asynchronous transfer mode 2. anti-tactical missile

ATMSautomatic transmission measuring system ATMXatomic munition explosive rail transport car ATP1. alignment and testing procedures 2. aiming, tracking, and pointing 3. advanced technology program ATRautomatic target recognition ATS1. administrative terminal system (computers) 2. aerothermal structure 3. automatic transfer switch 4. action tracking system ATSD/AEAssistant to the Secretary of Defense for Atomic Energy ATSDRagency for toxic substances and disease registry AT&TAmerican Telephone and Telegraph ATTVadvanced teleoperator test vehicle ATV1. Army test vehicle 2. all-terrain vehicle ATWaccelerator transmutation of nuclear waste at. wtatomic weight a.u.atomic unit Augold (chemical unit) AU1. astronomical unit 2. authentication unit 3. acousto-ultrasonics AURall-up-round Auth Codeauthorization code (or number) AUTOCONETautomatic communications network

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AUTODINautomated digital information network AUTOSEVOCOMautomatic secure voice communications AUTOVONautomatic voice network AUVSAssociation of Unmanned Vehicle Systems auxauxiliary aVabvolt AVCautomatic volume control AVDSAviation Depot Squadron avg/ave/avaverage (avg is the most common; ave is used mostly in subscripts; av is seldom used) AVIaudio video interleaved AVISAmerican visit (refers to a visit to the US by a member of the UK) AVRADAAvionics Research and Development Activity (Fort Monmouth, NJ) AVS1. access validation system 2. Avionics Depot Squadron 3. American Vacuum Society AVSCOMAviation Systems Command (Army) AW1. atomic weapon 2. atomic warhead AWACSairborne warning and control system AWDatomic weapon data (obsolete; now nuclear weapon data) AWDSautomated weather distribution system

AWEAtomic Weapons Establishment (England) AWE(A)Atomic Weapons Establishment, Aldermaston in Reading, Birkshire, England AWE(B)Atomic Weapons Establishment, Burghfield in Reading, Birkshire, England AWGAmerican wire gage AWLPGAlbuquerque (Operations) Workload Planning Guide (DOE) AWMAAir and Waste Management Association AWOCAlternate Wing Operations Center AWREAtomic Weapons Research Establishment (England) AWRSaverage weighted residual squared AWSAmerican Welding Society AWSBAtomic Weapons Safety Board AWSCanalyst work space component AWTGatomic weapons training group AWUAssociation of Western Universities AWVSAlbuquerque winter visibility study AWWAAmerican Water Works Association

B b1. barn (unit of area: 1024 cm2) 2. bit (binary digit) bit is seldom abbreviated unless it is used with a prefix, as in 8 kb

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B1. bel (logarithmic ratio) 2. brewster (optics) 3. bomb (when used with a number, as in B-52 4. bridge BA1. basic assembly 2. budget authority BAAbusiness area analysis BAC1. Boeing-Aerospace Company 2. Budget Advisory Committee (SNL) 3. bond additive corrections BACTbest available control technology BADTbest available developed technology BA&EBoeing-Aerospace and Electronics BAFbackup alert force BAFObest and final offer BAMballistic advance missile BANCSBell Administration Network Communications System BAOBendix Albuquerque Operations (obsolete; see KCD or AS/KCD) BARS1. Bell audit related system 2. behavioral anchored rating system BART1. best available retrofit technology 2. Bay Area Rapid Transit (Sandia, CA) BAS1. Bell audit system 2. Boeing advanced systems BASICbeginner's all-purpose symbolic instruction code (a computer language) BASTECBay Area Science and Technology Education Collaboration BATbest available technology BBBbisbenzimidazobenzophenanthroline (a polymer)

BBC1. balanced biological community 2. British Broadcasting Corporation bblbarrel BCAbattery control area bccbody-centered cubic BCCBattery Control Center BCDbinary coded decimal BCHBose-Chadhuri-Hacqueghem BCLBattelle Columbus Laboratories BCOBendix Connector Operations BCRbar code reader BCTKboron calcium chromate titanium potassium perchlorate Bdbaud (a variable unit of data transmission speed-that is equal to one bit per second) BDAbattle damage assessment BDADSbeacon data acquisition and display system BDAIbest demonstrated available technology BDATbest demonstrated available technology Bdebrigade BDMBraddock, Dunn, and McDonald BDPbattlefield development plan BDS1. British Defence (British spelling) Staff 2. basic door structure BDTburst delay timer

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BDU1. bomb dummy unit 2. battle dress uniform °Bédegrees Baume (used in the Baumé temperature scale) BEbinding energy BECTUBoeing Electrical Compatibility Unit BeneluxBelgium, the Netherlands, and Luxembourg BeOberyllium oxide BEPBureau of Engraving and Printing BERCBartlesville Energy Research Center BERLBurner Engineering Research Laboratory (SNL) BESbasic energy sciences BETBrunauer-Emmett-Teller (equation) BETAbattlefield exploitation and target acquisition BeVbillion electron volts (now obsolete; use GeV) BFAblank fire adapter BFObeat-frequency oscillator BFOQbona fide occupational qualification BFPCBuildings and Facilities Planning Committee BGblanket gas BGMballistic guided missile BGSbelow ground surface Bibiot (use aA, abampere, instead) BIABureau of Indian Affairs

BICBraduskill Intercept Concept BIFboiler/industrial furnace BIM1. ballistic intercept missile 2. barrier integrity monitor BIOSbasic input/output subsystem BIRDbilinear rotation decoupling BIS1. business information systems 2. bomb interface simulator BISDNbroad-band integrated services digital network BISMAPSbusiness information system modeling and planning system BISPbusiness information systems program BISSbase and installation security system BISSPOBISS Program Office bitbinary digit (See b) BIT1. built-in test 2. boron injection tank BITEbuilt-in test equipment BIUAbus interface unit, audio BIUDbus interface unit, digital BIUD/Mbus interface unit, digital/modem BIUMbus interface unit, modem BIXbyte information exchange BKCBendix, Kansas City (obsolete; now the Kansas City Division of the Allied Signal Aerospace Corp. See KCD or AS/KCD) bkgdbackground BKW-EOSBecker-Kistiakowsky-Wilson equation of state

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BLbaseline BLIDburied line intrusion detector BLMBureau of Land Management BLS1. Bureau of Labor Statistics 2. basic life support BMBureau of Mines BMCBallistic Missile Center BMDballistic missile defense BMDATCBallistic Missile Defense Advanced Technology Center BMDOBallistic Missile Defense Office BMDSCMBallistic Missile Defense System Command BMEWSballistic missile early warning system BMHAbuilding modifications hazards assessment BMOBallistic Missile Office BMP1. battle management plan 2. best management practice BMS1. balanced magnetic switch (or sensor) 2. battlefield management system 3. business management system BNbattalion BNABureau of National Affairs BNC(connector developed by) Bayonet, Neill, and Concelman BNFPBarnwell Nuclear Fuel Plant (South Carolina) BNIBechtel National, Incorporated

BNLBrookhaven National Laboratory BNWLBattelle Northwest Laboratory BObudget outlay (or obligation) B/Oblackout BOAbasic ordering agreement BODbiochemical oxygen demand BOLTbasic occupational literacy test BOPblowout prevention BORburnout risk BOSFburnout safety factor BOSFnnominal burnout safety factor bpboiling point BP1. Bandpass 2. below performance bpFboiling point (degrees Fahrenheit) BPGboron pyrolitic graphite bpibits per inch BPRbusiness process reengineering bpsbits per second BPS1. boundary penetration sensor 2. Boeing Petroleum Services BPTbest practical technology BPVback pressure valve Bqbecquerel (associated with ionizing radiation; now obsolete) Brbromine (chemical symbol) B&Rbudget and reporting

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BRAbomb relay assembly BRADCBelvoir Research and Development Center BRCbelow regulatory concern BRDECBelvoir Research, Development, and Engineering Center BRDFbi-directional reflectance distribution function BRESbuoy repeater system BRIbasic rate interface BRLBallistic Research Laboratory (Aberdeen, Maryland) BRL-CADBallistics Research Laboratorycomputer-aided design BRMDBudget Resources Management Division (DOE) BRPBig Rock Point BRTbioassay review team b/sbits per second; bps is preferred BSDbusiness system design BSIBritish Standards Institute BSOBallistic Systems Office (Air Force) BSRbulk shielding reactor BSSborehole seismic system BSTS1. burst surveillance and tracking system 2. boost surveillance and tracking system BS&Wbasic sediments and water BTCbarbed tape concertina

BTDRbuilding time delay relay BTEbattery timing equipment BTEXbenzene, toluene, ethylbenzene, and xylene BTIBattery Technology Institute BtuBritish thermal unit BTXbenzene-toluene-xylene BW1. bandwidth 2. biological warfare 3. bridge wire BWGBirmingham wire gage BWMbalance with motion BWObackward-wave oscillator BWRboiling-water reactor BWSTborated water storage tank BYbudget year BZbuckled zone

C ccenti- (a prefix indicating 10-2; use mm instead) C1. capacity 2. capacitance 3. circumference 4. coulomb (quantity of electricity in electrons) 5. Confidential ºCdegrees Celsius C2command and control

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C3command, control, and communications (also CCC) C4command, control, communications, and computers cacirca (use with dates only) Cacalcium CA1. custodial agent 2. corrective action 3. clean air 4. contamination area 5. cooperative agreement 6. certification authority C/A Codecoarse acquisition code CAA1. Clean Air Act 2. critical assembly area CAAMScriterion affirmative action management system CAAPScriterion affirmative action planning system CABCivil Aeronautics Board CABALcalcium-modified boroaluminate CABRACopper and Brass Research Association CACCCredibility Assessment Coordinating Center CACDACombined Arms Center (or Combat) Development Activity (Fort Leavenworth, KS) CACECOcalculation (of sodium spills) in cells for containment (a computer program) CAD1. computer-aided design 2. corrective action design CAD/CAMcomputer-aided design/ computer-aided manufacturing CADDcomputer-aided design and drafting

CAEcomputer-aided engineering CAE/RScomputer-aided engineering/ rocket system CAEScompressed-air energy storage CAESARcatalytic enhanced solar absorption receiver CAFcommand authority function CAFMScomputer aided air force management CAGcustomer advisory group CAGECcommercial and government entity code CAGINScenter advisory group for information systems CAI1. computer-aided instruction 2. certified asbestos inspector CAINcontrolled access by individual number CAIRScomputerized accident/incident reporting system CAIS1. coded aperture imaging system 2. Chief Architect of Information Systems calcalorie (joule is preferred) CAL1. Conversational Algebraic Language (computers) 2. completely assembled for launch calccalculated CALScomputer-aided acquisition and logistics support CALSONcomputer-aided acquisition and logistic(s) support operational network

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CAM1. completely assembled missile 2. continuous air monitor 3. computer-aided manufacturing 4. computer-assisted makeup 5. content-addressed memory CAMAcentralized automatic message accounting CAMAScentral alarm monitoring and assessment system CAMDcomputer-aided molecular design CAMICivil Aeromedical Institute CAMP1. crypto algorithm message processor 2. capital assets management program 3. corporate asbestos management program CAMPScomputer assisted mission planning system CAMScybernetic anthropomorphous machine system CAMUcorrective action management unit CANclean air network CANDUCanadian deuterium uranium (a reactor) CAOCarlsbad Area Office (DOE) CAORACombined Arms Operation Research Activity (Army) CAP1. code-activated processor 2. computer-aided plotting 3. corrective action plan 4. consolidated action plan CAPEcapability and proficiency evaluation CAPRScompensation and performance review system CAPScomputer automated publishing system

CARcorrective action report CARCcontainment air recirculating and cooling CARD1. computer-aided remote driving 2. Citizens for Alternatives to Radioactive Dumping CARTcloud and radiation testbed CAS1. calibrated airspeed 2. compressed-air storage 3. close air support 4. central alarm station 5. chemical abstract services 6. condition assessment survey 7. cost accounting standards 8. completely assembled for strike CASEcomputer-aided software engineering (or environment) CASMCommunity Academy for Science and Mathematics CASPcomparative analysis of standards program (computers) CASRCenter for Aviation System Reliability catcategory CAT1. clear-air turbulence 2. computer-aided tomography 3. Conductor Analysis Technologies, Inc. 4. computerized axial tomography CATCOMScredibility assessment team communications system CATNIPcomputer analysis tool for normal impact penetration (computers) CATS1. computer-assisted tracking system 2. computerized appraisal tracking system CATV1. community antenna television 2. cable television CAWchannel address word

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CBAcompressed breathing air CBCcipher-block chaining CBDCommerce Business Daily CBI1. computer-based instruction 2. confidential business information 3.Compton backscatter imaging (or inspection) CBMcooperative business management CBP1. Chicago bulletproof (doors) 2. convolution back projection CBRchemical, biological, radiological CBTcomputer-based training cc1. cubic centimeter (use cm3 instead) 2. carboncarbon (composite) c.c.complex conjugate CC1. core competencies 2. counter-counter-measure (see CCM) 3. Coronado Club 4. contamination control 5. Computer Committee 6. carbon copy C-Ccould-to-cloud CCAcircuit card assembly CCADcommand-coded arming device CCB1. Configuration Control Board 2. Change Control Board CCC1. command, control, and communications (also written as C3) 2. Crisis Coordination Center CCD1. charge-coupled device 2. camouflage, concealment, and deception (sometimes written as CC&D) 3. cockpit command disablement CCDFcomplementary cumulative distribution function

CCECenter for Computational Engineering 2. certification of claim for exemption CC&Econtractors choice and expense CCF1. common cause failure 2. central computing facility CCHDcentral computing help desk CCHPCorporate Chemical Hygiene Plan CCIOcontractor counter-intelligence officer CCIPcore competency in-reach project CCIRConsultative Committee on International Radio (European Standard) CCITTConsultative Committee on International Telephone and Telegraph CCIUcommand and control interface unit CCLcommodities control list CCM1. central control module 2. counter-countermeasure (see CC) CCNcentral computing network CCO1. chargeable cost objective 2. corporate contractual obligation CCPcontrolled component protection C/CPIPCode of Conduct Personal Integrity Program CCPDSCommand Center processing and display system CCR1. cyclic catalytic reforming 2. corporate customer requirement CCSCentral Control Station CCS2command and control subordinate system

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CCSTcenter for compound semiconductor technology CCTcurrent contrast imaging CCTCCoyote Canyon Test Complex CC testcomponent compliance test CCTVclosed-circuit television CCVTcoupling capacitor voltage transformer ccwcounterclockwise CCW1. channel command word 2. component cooling water cdcandela (a measurement of luminous intensity) CD1. computer diode 2. command disable (or disablement) 3. command destruct 4. control drawing 5. compatibility drawing (or document) 6. control document (as in CD453826) 7. consent decree C/Dcharge/discharge CDACore Disruptive Accident (see HCDA) CDBclassified database CDAMcrypto device adapter modules CDASclassified document accountability system CDC1. cumulative defects criteria 2. Control Data Corporation 3. Center for Disease Control CDDconventional (munition) demilitarization and disposal (technology) CDECCombat Developments Experimentation Command (Army)

CDF1. central distribution facility 2. combustion dynamics facility 3. core damage frequency cd/ft2candela per square foot CDIcommon data input CDIRScommon data input and retrieval system CDIUcontrol display interface unit CDLcommercial drivers license CDM1. Concurrent Design and Manufacturing 2. continuous dispensing masker 2. code-division multiplex cd/m2candela per square meter CDMS1. computerized document management system 2. central data management system CDOCSclassified document control system CDOSCromemco disk operating system CDPSCMS data production system CDR1. critical design report 2. complete design release 3. conceptual design review C&DRcharacterization and development report CDRLcontractor data requirements list CD/ROMcompact disk/read only memory CDS1. command disablement system 2. control and display system CDTcorporate diversity team CDUcapacitor discharge unit Cecerium (chemical symbol)

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CE1. Corps of Engineers 2. capital equipment 3. consistently exceeds 4. communications electronics 5. combustion engineering CEAAmerican translation from French: French Atomic Energy Commission CEARPComprehensive Environmental Assessment and Response Program (DOE) CEBcorporate ethics board CEC1. Capital Equipment Committee 2. Computing Education Center 3. cation exchange capacity 4. Commission of European Communities CECOMCommunications Electronics Command (Army) CEDEcommitted effective dose equivalent CEEcourier elevated eyes CEEECcommittee on energy, environment, and economic competitiveness CEGcorporate ergonomics group CEES1. camouflage effectiveness evaluation system 2. committee on earth and environmental sciences CEGcorporate ergonomics group CEL1. Civil Engineering Laboratory (Navy) 2. commercial equipment list 3. channel effluent limit CELScoded explosive logic system CEM1. channel electron multiplier 2. crew escape module 3. continuous emission monitor CENEFJoint US/Russian Center for Energy Efficiency CENSEICenter for System Engineering and Integration

CENTAGCentral Army Group (NATO) CENTCOMCentral Command CENTOCentral Treaty Organization CEOchief executive officer CEOIcommunications/electronics operating instructions CEP1. circular error probability (ICBM impact accuracy) 2. Concept Evaluation Program 3. Career Exploration Program (Alb. Public Schools) 4. catalytic extraction processing 5. controls for environmental pollution CEPPchemical emergency preparedness program CEQCouncil on Environmental Quality CERcomplete engineering release CERCLAComprehensive Environmental Response, Compensation, and Liability Act CERL1. commercial equipment requirements list 2. Construction Engineering Research Laboratory CERN1. Conseil Européen Pour Recherches Nucléaires (Translation: European Council for Nuclear Research/Switzerland) 2. Controller Establishment for Nuclear Research (UK equivalent of DOE) CERTcomputer emergency response team (DoD) CEScode enabling switch (or system) CESHCorporate Environmental Safety Health (Lockheed Martin) CEWGcontainment and effects working group

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cfcompare Cfcalifornium (chemical symbol) CF1. customer funded 2. containment failure CF4commodities control list CFA1. covering force area 2. central facility area 3. cross-field amplifier 4. cognizant federal agency CFC1. Combined Forces Command (Korea) 2. chlorofluorocarbon (or chlorinated fluorocarbon) 3. Conax Florida Corporation CFDcomputational fluid dynamics CFEconventional forces in Europe cfmcubic feet per minute (ft3/min preferred) CFMcontamination-free manufacturing CFMRCContamination Free Manufacturing Research Center CFOChief Financial Officer CFPOcustomer funded program office CFR1. commercial fast breeder reactor 2. Code of Federal Regulations CFRDconfidential, formerly restricted data cfscubic feet per second (ft3/s preferred) CFSconventional firing set CFTMcaptive and flight test missile CFUcentral function unit CFScore flood system CFYcurrent fiscal year cgcentigram

CG1. center of gravity 2. Commanding General 3. Classification guide C-Gcloud-to-ground CGA1. carrier group alarm 2. color-graphic adapter CGCcolor-graphics controller CGI1. computer graphics interface 2. combustible gas indicator CGMcomputer graphics metafile cgscentimeter-gram-second (use of all units particular to this system is discouraged by SI) CGSCONUS Ground Station CGTIScradle-to-grave tracking information system CHAERSECenter for Hungarian-American Environmental Research Studies and Exchange CHAMMPcomputer hardware, advanced mathematics and model physics chanchannel CHARMScomputerized hazard and record-management system CHCchlorohydrocarbons (or chlorinated hydrocarbons) CHEconventional high explosive (see IHE) Chelyabinsk-70All Russian Scientific Re-search Institute for Technical Physics: see VNIITF ChemIServeChemical Information Service (see CIS) CHEMKINchemical kinetics (computers)

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CHEMSchemical hazards emergency management system CHRconfinement heat removal CHTMCenter for High Technology Materials CH-TRUcontact-handled transuranic (waste) Cicurie (unit of radioactivity) CI1. confident informants 2. counter-intelligence C3Icommand, control, communications, and intelligence CIA1. Central Intelligence Agency 2. control indicator assembly CIACcomputer incident advisory capability (DOE) CIBCentralized Intercept Bureau CIC1. COMSEC intelligence controller 2. Combat Information Center 3. compensated ion chamber CICScustomer information control system CIDcharge injection device CIE1. Commission Internationale de l'Eclairage 2. cost impact estimate CIHSclassified information handling system (European TV standards) CIL1. critical items list 2. computer inoperative limits CIIMAcontractors image and information management association CIKcrypto ignition key CILRTcontainment integrated leak rate test

CIM1. computer integrated manufacturing 2. corporate information management CIMETCenter for Intelligent Manufacturing and Environmentally Conscious Technology CIMSCRADA Information Management System CINcervical intraepithelial neoplasia CINC1. Commander-in-Chief 2. Commander-in-Charge CINCADCOMCommander-in-Chief, Aerospace Defense Command CINCAFCENTCommander-in-Chief, Allied Forces Central (Europe) CINCEASTLANDCommander-in-Chief, East Atlantic CINCELMCommander-in-Chief, Eastern Atlantic and Mediterranean (Navy) CINCEURCommander-in-Chief, Europe CINCFECommander-in-Chief, Far East CINCLANTCommander-in-Chief, Atlantic (US) CINCMEAFSACommander-in-Chief, Middle East, Africa (South of Sahara), and Southern Asia CINCNORADCommander-in-Chief, North American Air Defense CINCPACCommander-in-Chief, Pacific Command (US) CINCREDCommander-in-Chief, Readiness Command CINCSPACECommander-in-Chief for Space

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CINCSPECOMMECommander-in-Chief, Specified Command, Middle East CINCUNCCommander-in-Chief, UN Command CINCUSAEURCommander-in-Chief, United States Army, Europe CINCUSNAVEURCommander-in-Chief, United States Navy, Europe CINDYcomputerized internal dosimetry (software package) CIOChief Information Officer CIPconsumer-identified product circircuit (also ckt) cir milcircular mil (also written as cmil) CIS1. Commonwealth of Independent States 2. classified information system 3. Chemical Information Service (also called ChemIServe) CIT1. compact ignition tokamak 2. critical incident technique CIVAcharge-induced voltage alteration CIWSclose-in weapon support CJCSChairman, Joint Chiefs of Staff cktcircuit (also cir) Clchlorine (chemical symbol) CLcenterline CLAZASclad axial (Z-direction) motion in subassemblies (computers) CLC1. central (or command) logic and control 2. current-limiting conductor

CLCSclosed-loop control system CLEOclassified energy on-line CLERVERclients and servers (SNL software) CL&Fcommon look and feel CLIFChemistry Lirrac Irradiation Facility CLNSconnectionless network services CLPcontract laboratory program CLScentral locator system CLS DETclosure detect cmcentimeter c.m.center of mass cm2centimeter squared cm3cubic centimeter c/m2incorrect; see cd/m2 CmCurium (chemical symbol) CM1. container module 2. Countermeasure 3. core melt 4. configuration management CMAChemical Manufacturers Association CMAHCommander-in-Chief Mobile Alternate Headquarters CMASclassified material accountability system CMC1. central monitor control 2. Cheyenne Mountain Complex 3. Cooperative Monitoring Center CMCScontinuous monitor and control system

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CMD1. command 2. Configuration Management Document (a US-UK program) CMEconstruction management engineer cmfcircular mils/foot (electrical conductivity) CMFcommon-mode failure CMFDcompressed magnetic field device CMGcontrol moment gyros CMGScruise missile guidance set CMIcruise missile interface cmilcircular mil (also written as cir mil) CMIScrisis management intercom system CMMcapability maturity model CMOS1. complementary metal-oxide semi-conductor (Fast Adder) 2. complementary metal-oxide on silicon CMP1. Center for Materials Production 2. container module packaging CMPLIScontinuous monitoring pH log-in system cm/scentimeters per second CMS1. control, monitor, and support 2. common mapping system 3. code (or case) management system 4. corrective measures study 5. canister monitoring system CMSDcode-multiplier sensor data CMSUCentral Missouri State University CMT1. Center for Microelectronics Technologies 2. Crisis Management Team CMTFCollector Module Test Facility

CMUcontrol monitor unit CMV1. commercial motor vehicle 2. counter-measures verification CN1. cemetery network 2. counter narcotics CNCcomputer numerically controlled CNCEcommunications nodal control element CNDECenter for Nondestructive Evaluation CNESCentre National d'Etudes Spatiales CNF1. cost: no fee 2. central network facility CNHRcontainment atmosphere heat removal CNOChief of Naval Operations CNRRcontainment radioactivity removal CNScentralized nuclear surety CNSACCenter for National Security and Arms Control CNWDIcritical nuclear weapon design information Cocobalt (chemical element) CO1. construction observer 2. contracting officer CO2carbon dioxide COA1. charts of accounts 2. customer order administration COATcareer opportunity for advancement training coaxcoaxial (cable)

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COB1. coordination of benefits 2. close of business 3. computer-on-a-board COBOLCommon Business-Oriented Language (computers) COBRA1. Consolidated Omnibus Budget Reconciliation Act 2. Calculation of Flow in Rod Bundle Reaction Assemblies (computers) COBRA DANEIntelligence Phased Array Radar at Shemya, Alaska COC1. code of conduct 2. chain of custody 3. contaminants of concern COCA1. consent order and compliance agreement COD1. crack-opening displacement 2. chemical oxygen demand COE1. Corp of Engineers 2. certificate of equivalency COEAcost and operational effectiveness analysis COEDcomputer-operated electronic display COEESCentral Office equipment engineering system COE/EUOEuropean Corps of Engineers coefcoefficient COGOcoordinated geometry (computers) COGScontinuous orbital guidance system COIcertificate of inspection COINcounterinsurgency CokerCokernel COLAcost of living adjustment cologcologarithm

COMcomputer-output microfilm COMETcomputer-operated management evaluation technique COMINTCommunications Intelligence (computers) COMMcommunications COMMZcommunications zone COMRADEXeffects of containment and meteorology on the environmental radiation exposure resulting from a power reactor accident (computers) COMSAT1. communications satellite 2. Communications Satellite COMSECcommunications security COMTENCommunications 10 COMUSKCommander, US (Forces) in Korea COMUSMACVCommander, US Military Assistance Command, Vietnam COMUXcombinatorial multiplex CONCalifornia open network CONADContinental Air Defense (Command) CONARCContinental Army Command concconcentrate constconstant cont1. continuous 2. continued CONTRNa computer language CONUScontiguous United States

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convconverter COOconduct of operations COPEcritically ordered path evaluator (computers) COQcost of quality CORBAcommon object request broker architecture CORCONcore/concrete (interaction code) CORDIVEMCorps/Division Evaluation Model CORRTEXcontinuous reflective radius time experiment coscosine COS1. Cray operating system 2. Chief of Staff COSALcoordinated shipboard/activity (allowance) list coshhyperbolic cosine COSLcooled optically stimulated luminescence (see OSL) COSMICcommon systems main inter-connecting COSMOScomputer system for mainframe operations cotcotangent (sometimes abbreviated as ctg) COTconsolidated operability test cotarcorrelated orientation tracking and range cotatcorrelated tracking and triangulation cothhyperbolic cotangent

COTScommercial off-the-shelf COVcounter-obstacle vehicle COVAWTcooperative vertical-axis wind turbine COZIcommunication zone indicator cp1. chemically pure 2. candlepower cPcentipoise CP1. carbon phenolic 2. control point 3. command post CPAcarboxypeptidase (a digestive enzyme) CPAFcost plus award fee CPAP Contractor Performance Assessment Program CPCcompound parabolic concentrator CPCACommittee for Persons with Challenged Abilities (DOE) CPCMcertified professional contract managers cpdcontact potential difference CPD1. central pulse distributor 2. continuing professional development CPEcommand post equipment CPFFcost plus fixed fee CPGCummings Power Generation, Inc. CPI1. characters per inch 2. cost performance index CPIAChemical Propulsion Information Agency CPIFcost plus incentive fee

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CPIICCorporate and Personal Integrity Investigative Committee C-PIPCorporate and Personal Integrity Program CPJchlorinated polyethylene jacket Cpkstatistical process control CPLconfinement protection limit cpm1. cycles per minute 2. counts per minute CPM1. critical path method (computers) 2. Center for Project Management CPMS1. cable pressure monitoring system 2. criteria pollutant monitoring station CPPMcomputer protection program manager CPPSRcontractor personal property systems review CPR1. cardiopulmonary resuscitation 2. Corporate Process Requirements CPS1. cycles per second; use Hz instead 2. certified professional secretary 3. Corporate Policy Statements CPSAConsumer Product Safety Act (1972) CPSRcontractor purchasing system review CPSRCCorporate and Personal Standards Review Committee CPTcurrent procedural terminology CPUcentral processing unit CPVcommand post vehicle CPXcommand post exercise

CQE1. certified quality engineer 2. Corporate Quality Excellence (Program) CQIcontinuous quality improvement CQMcertification, qualification, and monitoring Crchromium (chemical symbol) CR1. catalytic reforming 2. contractor (also CTR) 3. contact resistance 4. change requisition 5. corporate requirements 6. community relations CRACivil Rights Act CRADACo-operative Research and Development Agreement CRBRPClinch River Breeder Reactor Plant CRC1. Control and Reporting Center 2. cyclic redundancy check (or code) (computers) CRCMComprehensive Regional Center for Minorities CRD1. civilian research and development 2. confidential restricted data CRDECChemical Research, Development, and Engineering Center CREGcontrolled reluctance eddy-current generator CRF1. Combustion Research Facility 2. central response force CRFPCooperative Research Fellowship Program CRLCook Research Laboratories CRLBCramer-Rao Lower Bound CRM1. chemical remanent magnetization 2. Center for Radiation-Hardened

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Microelectronics 3. Corporate Requirements Management 4. corrective repair maintenance 5. count rate meter CROcathode-ray oscilloscope CRPCommunity Relations Plan CRREScombined release and radiation effects satellite CRSConference Room Scheduling (for the Internal Web) CRT1. corporate requirements tracking 2. cathode ray tube 3. coolant return tank CRTFcentral receiver test facility CRWMcivilian radioactive waste management Cryptocommunications security keying material CRZcontamination reduction zone cs or cScentistoke c/scycle(s) per second (use Hz instead) Cscesium (chemical symbol) CS1. can select 2. compound-semiconductor 3. communications satellite 4. core support C-Scustomer-supplier C/Scontainment and surveillance C3Scommand, control, and communications system C4SCenter for Command, Control and Communications Systems CSA1. Canadian Standards Association 2. canned subassembly 3. compliance schedule agreement (or approval) 4. Command Support Area

CSAC1. Computer Security Advisory Committee 2. Customer Satisfaction Assessment Committee CSAMTcontrolled-source audio-frequency magnetotelluric CSAPcustomer satisfaction assessment project Csatcustomer satisfaction csccosecant CSC1. Central Security Control 2. computer software component 3. computer systems coordinator cschhyperbolic cosecant CSCIcomputer software configuration (or component) item CSCScost and schedule control systems C/S CSCcost and schedule control systems criteria CSDcontrol and status display CSDPContinental Scientific Drilling Program CSELcombat survivor/evader locator CSFCollege of Santa Fe CSFACollege of Santa Fe/Albuquerque CSGcombinatorial solid geometry CSIcritical success indicator CSILcritical and sensitive information list CSISCenter for Strategic and International Studies CSIUcoded switch interface unit

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CSLcontractor standards laboratory CSM1. computer security manager 2. core support module 3. customer service manager CSMA/CDcarrier sense with multiple access with collision detection CSNICommittee on Safeguards of Nuclear Installations CSOCConsolidated Space Operations Center CSP1. chopped silica phenolic 2. control switching point 3. certified safety professional CSPDcareer services for persons with disabilities CSR1. current situation room 2. computer security representative 3. customer service request 4. customer service representative CSRL1. common strategic rotary launcher 2. Compound Semiconductor Research Laboratory CSRScoherent Stokes-Raman spectroscopy CSS1. coded switch set (or system) 2. component support structure 3. US designator for Chinese surface-to-surface missile CSSACrop Science Society of America CSSCcoded switch set controller CSSMcomputer security site manager CSSOcomputer systems security officer CSTcrystalline silicotitanate CSU1. customer service unit 2. computer support unit

CSWchannel status word CSWSCommand Support Weapon System CT1. cryoresistive transmission 2. current transformer 3. counter terrorism 4. computed tomography (microscopy) CTACentral Training Academy CTACCommunity Training and Assistance Center (Boston) CTAQCenter for Transportation and Air Quality CTBcomprehensive test ban CTBNcarboxy terminated polybutadine acrylonitrile CTBTComprehensive Test Ban Treaty CTCcentralized traffic control CTCAcommunicated threat capability assessment CTD1. corporate training and development 2. charge transfer device 3. cumulative trauma disorder CTE1. component test equipment 2. coefficient of thermal expansion CTF1. Central Technical File 2. Coyote Test Field CTFCCoyote Test Field Complex ctgcotangent (see cot) CTGcontrol technique guidelines CTHa three-dimensional shockwave physics code developed at SNL CTLcombat training launch

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CTMcollimation test module CTMScarrier transmission maintenance system CTOCCommand Tactical Operations Center CTPComprehensive Test Plan CTR1. controlled thermonuclear reactor 2. contractor 3 center 4. critical temperature ratio CTS1. cable termination shelter 2. carpal tunnel syndrome CTSSCRAY time-sharing system CTTFCountermine Test Track Facility CTU1. compatibility test unit 2. calibrator test unit CTWclean tactical weapon CTZCorps Tactical Zone cucubic CUBEcomputer use by engineers CUBITsolid model file representation of a component or product that automatically generates a mesh for subsequent finite element analysis CUCVcommercial utility cargo vehicle CUSPCenter for Ultraclean Semiconductor Processing CUSRcustodial unit status report CUSUMcumulative summation CV1. CryptoVariable 2. contingency value CVC1. conserved vector current 2. chemical vapor composites

CVCSchemical volume and control system CVD1. chemical vapor deposition 2. copper vapor deposition CVPcountermeasures verification program CVR1. Center for Verification Research 2. current viewing resistor CVScomposition variability study CVT1. current-viewing transformer 2. continuously variable transmission cw or CW1. continuous wave 2. clockwise CW1. chemical warfare 2. chemical weapon 3. conventional weapon 4. confined workspace 5. clean water CWA1. Communication Workers of America 2. Clean Water Act CWDRchemical waste disposal request CWEconventional weapons effects CWGMcooling water gamma monitor CWLchemical waste landfill CWMPChemical Waste Management Plan CWRcontinuous welded rail CWScontaminated water storage cwthundredweight CWWcompressed workweek CXcategorical exclusion CYcalendar year CYBLcylindrical boiling

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CYLTRANan electron/photon transport code CZMACoastal Zone Management Act

D d- deci- (a prefix indicating 10-1) d1. density 2. day 3. deuteron or deuton D1. debye (unit of electric dipole moment that equals 10-18 Franklin cm) 2. deuterium 3. dee (in a cyclotron) 4. diopter (optics) 5. darcy (unit of permeability; see mD) 6. drawing (standards) 7. destructive (tests) dadry air DA1. Department of the Army 2. double amplitude 3. Design Agency D/Adigital to analog DAASYdata acquisition and analysis system DABdata acquisition box DAC1. data acquisition and control (SCCS) 2. digital-to-analog converter 3. derived air concentration 4. Defense (Nuclear Agency) auxiliary closure 5. Disabilities Awareness Committee DACCCDispersed Aircraft Cell Control Center DADPDeputy Administrator for Defense Programs DADSdata acquisition and display system DAFDevice Assembly Facility DAGSdata-gathering system

DAKOTADesign Analysis Kit for Optimization software DAM1. device adapter module 2. data acquisition module DAMAdemand activated manufacturing architecture DAODayton Area Office (DOE) DAPdiallylphthalate DA/PADesign Agency/Production Agency DARCOM1. Development and Readiness Command (Army) 2. Development and Research Command DARHTDual-Axis Radiographic Hydrodynamic Test Facility DARPADefense Advanced Research Projects Agency DASdata acquisition system DASADefense Atomic Support Agency (obsolete; now Defense Nuclear Agency) DASCDirect Air Support Center DASDdirect-access storage device (computers) DASMADeputy Assistant Secretary for Military Application (DOE) DASOdemonstration and shakedown operations DAT1. diversity (awareness) action team 2. digital audio tape DAUdata authentication unit DAVIDdigital automatic video intrusion detection dBdecibel

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DBdepth bomb dBAA-weighted decibel DBA1. database administrator 2. doing business as (usual) 3. design basis accident DBFdesign basis fire dbidecibels for an isotropic source dBmdecibel to 1 mW DBMSdatabase management system DBRdistributed Bragg reflectors DBSdebris barrier system dBSPLdecibel sound pressure level dcdirect current DC1. data concentrator (computers) 2. direct charges 3. direct chill D&Cdrilling and completion DCA1. Defense Cooperation Agreement 2. dual-capable aircraft 3. Defense Communications Agency dc/acdirect current/alternating current DCCdialog corporate connection (a library retrieval system) DCERdesign criteria engineering release DCFdose conversion factor DCGDerived Concentration Guide DCHdirect containment heating DCIDirector of Central Intelligence DCNdocument change notice

DCOdetonator circuit ohmmeter DCPdevice control program DCPCdielectric compound parabolic concentrator DCPGdefense communications planning group DCR1. data communication request 2. design change request DCS1. Document Control Station 2. drawing (or document) control system 3. defense communications system 4. Deputy Chief of Staff DCSAdependent care spending account DCSCDesktop Computer Support Center DCSRDADeputy Chief of Staff, Research Development and Acquisition (Army) DCTdiscrete cosine transform DCTLdirect-coupled transistor logic DCUdata control unit DCVWdirect current voltage withstanding DCWVdirect-current working volts DDdouble density D/Ddisablement/denial D&Ddecontamination and demolition DDAdigital differential analyzer DDRdecontamination, decommissioning, demolition, and restoration DDEdynamic data exchange DDESBDoD Explosives Safety Board

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DDIDecisions and Designs, Inc. DDNdefense data network DDODeputy Director of Operations DDS1. detailed design specification 2. direct digital synthesizer DDSAdual-dual stronglink assembly DDT1. design demonstration testing 2. deflagration-to-detonation transition 3. Dichloro-diphenyl/trichloroethane DDTAderivative differential thermal analysis DEdisablement equipment DEADrug Enforcement Agency DEARDOE Acquisition Regulation DEBdepolarizer electrolyte binder DECDigital Equipment Corporation decaa prefix denoting 10 (a variant of deca is deka) DECANALdecision analyses (computers) DECnetDigital Equipment Corporation Network (computers) decondecontamination DECtalka speech synthesizer DECUSDigital Equipment Corporation User Society DEFdata exchange format DEFCONdefense readiness condition DEFORMfuel deformation calculation (computers)

degdegrees (use the symbol with numbers: 32ºC) DEGSdiethyl glycol succinate (explosive) DELPHIdiscriminating electrons with laser photon ionization DELSOL"of the sun (span)" (computers) DEMOdemonstration plant analysis (computers) DEMPdispersed electromagnetic pulse DEP1. Dental Expense Plan 2. diversified equity portfolio der or derivderivative DER1. development engineering release 2. designated engineering representative DESdata encryption standard det1. detonator 2. determinant devdeviation DEWdirect energy weapons dfdegree of freedom (also DOF) DF1. deuterium fluoride 2. direction finder DFD1. demolition firing device 2. data flow diagram 2-DFFTtwo-dimensional fast Fourier transform DFMdesign for manufacturing (obsolete; now DPR: design for product realization) DFPdefensive fighting position DFTdiscrete Fourier transform DFTPdetailed flight test plan

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DFWMdegenerate four-wave mixing dgdecigram DGdesign guide DG/DACdata general/data acquisition and control (a subsystem of AIDS) DGE1. DADS graphic environment 2. Division of Geothermal Energy (DOE) DGPdata-gathering panel DGSWSDirector General of Strategic Weapon System DGZdesignated (or desired) ground zero DHE or DHXdump heat exchanger DHFRdihydrofolate reductase DHLWdefense high-level waste DHMdexterous hand master dHvAde Haas van Alphen (effect) D&Idisassembly and inspection dia or diamdiameter DIADefense Intelligence Agency DIALdifferential absorption LIDAR DICEdefensive information to counter espionage DID1. direct inward dialing 2. dynamic identification 3. defense in depth 4. data item description 5. display interface device DIFAdigital impedance for Faradaic analysis DIIdefense industry initiative DIICdielectric insulated integrated circuit

dimdimension DIPdual in-line package DIS1. Defense Investigative Service 2. design information summary 3. disable DISADefense Information Systems Agency DISCdirect-injected stratified charge DISIDSdisplay and information distribution system dis/sdisintegrations per second DIUdata interface unit div1. divergence 2. division DJTAdevelopment joint test assembly dldead load dLdeciliter DLdoor lock DLC1. Diversity Leadership Committee 2. data link control DLCFdata link control field DLPIdiscrete line PAL interface DLRAmerican translation: German research establishment for Aeronautics and Astronautics DLWGdamage limitation working group (obsolete; see CEWG) dmdecimeter DMdepartment manager DMA1. Division of Military Application (now Assistant Secretary for Defense Programs: ASDP) 2. Defense Mapping Agency

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3. direct memory access 4. Director of Military Affiliations 5. diagnosis of multiple alarm (system) DMCdigital microcircuit DMFData Management Facility DMM1. design methodology manager: a tool for defining and using process flows through a graphical user interface 2. digital multimeter DMPdiscrepancy microprocessor DMRdatabase management routine DMSdata (or document) management system DMSP1. Defense Meteorological Satellite Program 2. Defense Meteorological Support Program DMTSdistinguished member of technical staff DMZdemilitarized zone DNADefense Nuclear Agency DNA/FCDefense Nuclear Agency/Field Command DNBdeparture from nucleate boiling DNFSBDefense Nuclear Facilities Safety Board DNIdinitroimidazole DNSIdefense nuclear surety inspection DNOdo not operate DNTdinitrotoluene (explosive) DNTSdistributed network terminal server

DOB1. depth of burst 2. dispersed operating base DOBISDortmunder Bibliothers Systems (Library program to retrieve references) obsolete: replaced by Horizon DOCDepartment of Commerce DOCUSARdocument storage and retrieval DoDDepartment of Defense DODdepth of discharge DoDDDepartment of Defense Directive DOEDepartment of Energy DOE/AAODepartment of Energy/ Amarillo Area Office DOE/ALDepartment of Energy/ Albuquerque Operations Office DOE/ANDepartment of Energy/Arms (Control and) Nonproliferation DOECNDepartment of Energy/ Communications Network DOE/ERDepartment of Energy/ Energy Research DOE/ESCDepartment of Energy/ Electrical Safety Committee DOE/FEDepartment of Energy/Fossil Energy DOE/IDDepartment of Energy/Idaho (Field Office) DOE/KAODepartment of Energy/ Kirtland Area Office DOELAPDepartment of Energy/ Laboratory Accreditation Program

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DOE/MADepartment of Energy/ Military Applications DOENTSDepartment of Energy, National Telecommunications Systems DOE/NVDepartment of Energy/Nevada Operations Office DOE/OSSDepartment of Energy/Office of Safeguards and Security DOE/RFAODepartment of Energy/ Rocky Flats Area Office DOE/SRODepartment of Energy/ Savannah River Operations Office DOE/WPDDepartment of Energy/ Weapons Program Division DOFdegree of freedom (also df) DOI1. direct optical initiation 2. Department of the Interior DOITdevelop on-site innovative technologies DOJDepartment of Justice DOL1. Department of Labor 2. disperse operating location DONRussian acronym for dopplier microwave area sensors DOP1. detailed operating procedure 2. dioctyl/phthlate DOS1. Department of State 2. disk operating system DOTDepartment of Transportation DOVAPDoppler velocity and position DOWDow Chemical Company, (Golden Colorado) dPdifferential pressure

D&Pdevelopment and production DP1. dew point 2. Defense Programs 3. data processing 4. disposal procedure DPAdiversion path analysis DPACDisability Placement and Accessibility Committee DPCDirect Program Committee DPCMdifferential pulse-code modulation DPCTPDefense Programs Critical Technology Plan dpdtdouble-pole, double-throw (electrical switches) DPM1. dual-purpose missile 2. data processing machine 3. documents per minute DPQdata quality objective DPRdesign for product realization DPS1. data processing set 2. Direct procurement services DPSKdiferential-phase-shift keying dpstdouble-pole, single-throw (electrical switches) DPTRAdefense programs transportation risk assessment DQCdirectorate quality coordinator DQOdata quality objective DR1. disability retirement 2. development report 3. design reconstitution DRAdetailed risk analysis DRAAGdesign review and acceptance group

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DRAM1. dynamic response of articulated machinery 2. dynamic random access memory DRC1. data-retention chassis 2. Disciplinary Review Committee DRCFdose-rate conversion factor DRDdeep-rock disposal DREdestruction and removal efficiency DRMdepositional remanent magnetization DRPdeliverable reimbursable product DRTFDistributed Receiver Test Facility DRUdynamic reference unit DS1. development specification 2. direct support 3. development schedule 4. door switch 5. data system 6. doublesided 7. department supervisor DSA1. dual stronglink assembly 2. direct support activity DSACdeterministic severe accident criteria DSARCDefense System Acquisition Review Council (obsolete; use Joint Requirements and Management Board) DSATanti-satellite defense DSB1. Defense Science Board 2. double sideband (modulation) DSC1. differential scanning calorimetry 2. direct satellite communication DSCAdifferential strain curve analysis DSCSdefense satellite communications system DSDdata security device DSDPdeep-sea drilling project

DSEdistributed system environment DSGdownhole steam generator DSGSdirect support/general support DSIDecision Sciences Institute DSIDdisposable seismic intrusion detector DSKdisk DSLdirect-strike lightning DSLAdual stronglink assembly DSMdata stream multiplexer DSNdefense switched network DSP1. doctoral study program 2. defense support program 3. digital signal process (or processor) DSRDdata systems research and development DSS1. decision support systems 2. double shell slurry 3. designated seismic station DSSFdouble-shell slurry feed DSSLdetonator safing stronglink DSTdouble-shell tank DSTODefense Science and Technology Organization (Australia) DSVdefense suppression vehicle DSVSdeployable seismic verification system DSW1. Director of Special Weapons 2. Directed Stockpile Work DSXdigital signal crossconnect

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DT1. diffraction tomography 2. dedicated target D-Tdeuterium-tritium DTA1. differential thermal analysis 2. dynamic testing agency 3. designated travel agency DTCdesktop casting DT2C3Director of Theater and Tactical Command, Control, and Communications (Office of the Secretary of Defense) DTD1. document type definition 2. data transfer (or transport) device DTDBdigital terrain database DTEdata terminal equipment DTEDdigital terrain elevation data DTEMdigital terrain elevation map(s) DTERdrawing transfer engineering release DTICDefense Technical Information Center DTL1. diode transistor logic 2. decontamination team leader DTMFdual-tone modulated frequency DT/OTdevelopment test/operation test DTP1. desktop publishing 2. diversified telephone portfolio DTRdelivery to reclamation DTR90taut wire sensor (one wire) DTR2000taut wire sensor (two parallel wires) DTRADefense Threat Reduction Agency DTRGdry tuned motor gyroscope

DTUdata transfer (or transformation) unit DTUCdata transfer unit cartridge DTVdevice transport vehicle DTVBdigital television backup DTVEdigital television element DTWIDOE transuranic waste integration DU1. distribution unit 2. depleted uranium 3. Dobson unit (used in measuring ozone) DUUdeliberate unauthorized use DUVASderivative ultraviolet absorption spectroscopy DVdata are valid D&Vdemonstration and validation DVAdirect viscosification agent DVMdigital voltmeter DVPdeferred vested pension DVPSdigital voice processing system DW1. dry well 2. development warhead DWCSdigital wireless control system dwgdrawing DWIdriving while intoxicated (or impaired) DWMPDefense Waste Management Plan DWPFDefense Waste Processing Facility DWSdigital weapon simulator DWTM(Office of) Defense Waste and Transportation Management (DOE)

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DWVdielectric withstanding voltage DWVAdifferential waveform analysis DXTdepth times thickness Dydysprosium (chemical symbol) DYMACdynamic material control dyndyne (a unit of force in the centimeter-gram-second system; use newtons instead)

E E- exa- (a prefix) E1. environmental (test) 2. electrical (hazard) EA1. environmental assessment 2. emergency action 3. employee awards 4. endangerment assessment EACEnergy Advisory Committee EACIEnvironmental Air Control, Inc. EACLOCelectron-alkali (Atom) close coupling (computers) EACTemergency action and coordination team EADASengineering and administrative data acquisition system EAGextended absence greeting EAM1. emergency action message 2. embedded atom method EAP1. Employee Assistance Program 2. Educational Assistance Program 3. emergency-action procedures

EAPROEmployee Assistance Program Referral Option EAR1. environmental assessment report 2. Export Administration Regulation EAROMelectrically alterable read-only memory EASemployee accounting system EASIestimate of adversary sequence interruption EB1. exploding bridge 2. Electrolyte binder EBAMelectron-beam addressable memory EBCEmployee Benefits Committee EBCDICextended binary-coded decimal-interchange code (computers) EBCEelectron-beams control electronics EBFAelectron-beam fusion accelerator EBICelectron-beam-induced current EBISelectron-beam ion source EBMelectron-beam machining EBR1. electron-beam recording 2. experimental breeder reactor EBRCEquipment Budget Review Committee EBWexploding bridgewire EBWRexperimental boiling-water reactor EC1. environmental chamber 2. European Community 3. exceptional contributor ECAelectronic (or electrical) component assembly ECADelectronic computer-aided design

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ECAPEuropean Conflict Analysis Project ECBelectronic code book ECC1. emergency cardiac care 2. emergency core coolant(or cooling) ECCDelectrical compatibility control drawing ECCI1. electronic commerce of component information 2. emergency core coolant (or cooling) injection ECCMelectronic counter-countermeasures ECCNexport commodity control number ECCSemergency core-cooling system ECDelectron capture detector (explosives) ECF1. Entry Control Facility 2. extracellular fluid 3. Explosives Components Facility E&CFevents and causal factors ECL1. emitter-coupled logic 2. Execution Control Language 3. environmental checklist ECL/ADMenvironmental checklist/action description memorandum ECLOemitter-coupled logic operator ECM1. electronic countermeasure 2. electrochemical machining 3. environmentally conscious manufacturing ECMCenhanced crisis management capability ecoelectron-coupled oscillator ECOexport controlled operations ECOTRACecology tracking

ECP1. engineering change proposal 2. Employee Contribution Plan 3. entry control point ECR1. engineering change request 2. electron cyclotron resonance 3. emergency conference room ECS1. environmental control system 2. emergency cooling system 3. emergency control station ECSWextended channel status word ECTevaporator condensate tank ECTLemitter-coupled transistor logic ECTUelectrical compatibility test unit ECUenvironmental control (or conditioning) unit ECUTenergy conversion and utilization technologies ECWeffluent cooling water ED1. engineering and development 2. explosive destruction 3. emergency destruction 4. external device (computers) E&Denvironmental and degrading (or destructive) EDACEarth Data Analysis Center (UNM) EDAXenergy defensive analysis with x-rays EDB1. energy (science and technology) database 2. ethylene dibromide EDCEmployee Development Center EDDenforcement decision document EDEeffective dose equivalent EDFEnvironmental Defense Fund

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EDGemergency diesel generator EDLNedge and line (weights) EDM1. electron discharge machine (or ma-chining) 2. electrical discharge machining (or machine) EDMAelectronic design and manufacturing automation EDNAexternally driven nuclear assembly EDOCerror detection or correction EDPelectronic data processing EDPEelectronic data-processing equipment EDPMelectronic data-processing machine EDPSelectronic data-processing system EDRelectric dispersion reactor EDREemergency deployment readiness evaluation EDRSenvironmental data reporting system EDS1. energy dispersive spectroscopy 2. emergency disablement system 3. electronic disk storage 4. explosives detection system 5. earth data system 6. event dataset 7. Explosive Destruction System EDUerror detection unit EDWenvironmental development warhead EDXexoatmospheric discrimination experiment EE1. engineering evaluation 2. electrical engineer 3. external evaluation E&Eenergy and environment

EECEuropean economic community EE/CAengineering evaluation and cost analysis EED1. end event data 2. electro-explosive device EEFIessential elements of friendly information EEGelectroencephalograph EEMessential equipment monitor EEOEqual Employment Opportunity EEO/AAEqual Employment Opportunity/Affirmative Action EEOCEqual Employment Opportunity Commission EEPROMelectrically erasable programmable read-only memory (see EPROM) EER1. engineering evaluation reactor 2. engineering evaluation release EERCEnergy and Environment Research Center EEROMelectrically erasable read-only memory EERUenvironmental emergency response unit EESelectric energy systems EEVemployee expense voucher efE-field (fence) EFCelectronic filmless camera EFCOGenergy facilities contractors operating group

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effefficiency EFFelectric field fence EFIexploding foil initiator EFMSelectronic forms management system EFPexplosively formed projectiles EFT1. electronic fund transfer 2. electronic file transfer EFTSelectronic funds transfer system e.g.exempli gratia (for example) EGemergency generator EGAenhanced graphic adapter EG&GEdgerton, Germeshausen and Grier, Inc. (DOE Contractor) EGRenergy gamma rays EGSengineering graphics system EHenvironment and health EHDelectrohydrodynamics EHEMPenhanced, high-altitude electro-magnetic pulse EHFextremely high frequency (UHF is preferred) EHSextremely hazardous substance EHVextremely high voltage (UHV is preferred) EHVLenhanced hypervelocity launcher EIA1. Electronic Industries Association 2. economic impact assessment 3. Energy Information Administration (DOE) EICenvironmental Information Center

EIFEnterprise Integration Facility EIGelectronic installation group EIISenergy intelligence information system EINemployer identification number EIS1. environmental impact statement 2. engineering information system 3. export in-formation system EIVRexchange of information by visits and reports (in US/UK defense agreements) EIVSexperimental inventory verification system EKGelectrocardiograph (or electrocardiogram EL1. erector launcher 2. environment laboratory ELCerector-launcher car ELF or elfextremely low frequency ELIearly litigation qualification ELINT1. electromagnetic intelligence 2. electronic intelligence ELKEelevated kinetic-energy (weapon) ELS1. enhanced line security 2. explosive light source ELTECHElectrotechnical University of St. Petersburgh EM1. electromagnetic 2. Energy Measure-ments, Inc. (subsidiary of EG&G) 3. environ-mental monitoring (or management) EMATelectromagnetic acoustic transducer EMCelectromagnetic compatibility

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EMCC1. Electromagnetic Code Consortium 2. Emergency Management Coordination Committee EMEAelectronic mail enabled application EMESelectromagnetic environment simulator EMF or emf1. electromagnetic force (or field) 2. electromotive force EMFGexplosive magnetic flux generator EMGexplosive Marx generator EMIelectromagnetic interference EMINSemergency management information system EMISemergency management information system (sometimes abbreviated as EMINS) EML1. electromagnetic launcher 2. equipment maintenance log EMMSelectromagnetic measurements system EM&NRenergy, minerals, and natural resources EMP1. electromagnetic pulse 2. enrichment monitor processor 3. electron microprobe 4. environmental monitoring program EMRelectromagnetic radiation EMS1. emergency management system 2. emergency medical service EMSLEnvironmental Monitoring Systems Laboratory EMT1. emergency medical technician 2. executive management team

emu or EMUelectromagnetic unit EMXelectromagnetic X ENDFevaluated nuclear data file ENDS1. enduring NUDET detection system 2. enhanced nuclear detonation safety ENETEthernet ENGelectronic newsgathering ENNEenterprise network excellence ENNKendoatmospheric nonnuclear kill ENRenergy neutrons ENSemergency notification system ENSCEenemy situation correlation element ENVenvironmental EnviroTRADEenvironmental technologies for remedial actions data exchange e/oenrichment percent EO1. equal opportunity 2. environmental operations 3. executive order EOAend of address EOC1. Emergency Operations Center 2. Environmental Operations Center EOD1. explosive ordnance disposal 2. erasable optical disk EOFend of file EOLend of life EOM1. end of message 2. end of month EONexternal open network EOPexperimental operating procedure

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EORenhanced oil recovery EOS1. equation of state 2. earth observation system 3. equal opportunity specialist EOSATearth observation satellite EOSCelectro-optics subcouncil EOS/ESDelectrical overstress/ electrostatic discharge EOSPelectrooptic signal processor EP1. earth penetrator 2. engineering procedure 3. environment protection 4. Electronic parts 5. exceptional performance EPA1. Environmental Protection Agency 2. electrical penetration assembly 3. Equal Pay Act EPAC1. Educational Programs Activity Committee 2. East Pacific EPCearly Pentagon capability EPCAEnergy Policy and Conservation Act EPDengineering production document EPI1. electronic position indicator 2. engineering process improvement EPICEl Paso International Center (Fort Bliss, Texas) EPICUREexperimental physics interactive controls user resource enhancement EPLDerasable programmable logic devices EPMSenhanced property management system EPOCHelectron propagation on channels EP&Pelectronic publishing and printing

EPR1. ethylene-propylene rubber 2. electron paramagnetic resonance 3. experimental power reactor 4. employee placement report 5. employee personnel record EPRIElectric Power Research Institute EPRO or eproend product EPROMerasable (or electrically) programmable read-only memory (see EEPROM) EPSFencapsulated postscript format EPWearth-penetrating weapon EPZemergency planning zone Eqequation (used only before a number); plural is Eqs EQequipment qualification EQFDenhanced quality function deployment EQIPequipment qualification inspection program EQRCElectronics Quality Reliability Center equiv1. equivalent 2. also equivalency ER1. engineering release 2. environmental restoration 3. energy research 4. enhanced radiation 5. energy ratio ERA1. electron ring accelerator 2. Economic Regulatory Administration (DOE) 3. ERDA research abstract 4. expedited response action ERABEnergy Research Advisory Board ERADexplosive release atmospheric dispersion ERADCOMElectronics Research and Development Command (Army)

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ERB1. Energy Resources Board 2. exclusion region barrier ERCEngineering Research Center ERCSemergency response cleanup services ERDemergency response director ER&Dexploratory research and development ERDAEnergy Research and Development Administration (previously AEC and now DOE) ER&EExxon Research and Engineering erferror function erfcerror function (complement of) ERGExecutive Review Group ergserg-second (obsolete; use joules) ERIMEnvironmental Research Institute of Michigan ERISexoatmospheric reentry intercept system ERISAEmployee Retirement Income Security Act ERLemergency reference level ERNSemergency response notification system EROMerasable read-only memory ERP1. equipment requirement program 2. effective radiated power 3. emergency response procedure ERPGemergency response planning guideline

ERPOEnvironmental Restoration Project Office (DOE) ERSequipment requirements schedule ERSTenvironmental restoration site tracking ERT1. emergency response team 2. environmental response team ERUequipment replaceable unit ERVemergency relief valve ER&WM or ER/WMenvironmental restoration and waste management ESexpert system E&Serror and sensitivity ESA1. engineering science assistant 2. electronic safety and arming 3. Endangered Species Act ESAABEnergy Systems Acquisitions Advisory Board ESAD1. electronic safing, arming, and detonation 2. electronic safing and arming device ESAFelectronic safe arm fire ESAISAexplosive safety internal self-assessment ESAISAEuropean Safeguards and Research Development Association ESARDAEuropean Safeguards and Research Development Association ESATenvironmental services assistant team ESC1. Enhanced Surveillance Campaign 2. Electrical Safety Committee 3. electrostatic chuck

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ESCAelectron spectroscopy for chemical analyses ESCSemergency satellite communications system e.s.d.estimated standard deviation ESD1. environmental sensing device 2. electrostatic discharge 3. electron-simulated desorption 4. emergency shutdown device ESF1. Exploratory Studies Facility 2. exploratory shaft facilities 3. engineered safety features ESFASengineered safety features actuation system ES&Henvironment, safety, and health ESHACEnvironmental Safety and Health Advisory Committee ESI1. extremely sensitive information 2. equivalent series inductance 3. expanded site investigation 4. effluent species identification ESIEextended SATKA integrated experiment ESIUejector-store interface unit ESMenvironmental sensor (or status) monitor ESNAEuropean Society of Nuclear Methods in Agriculture ESOPEmployee Stock Ownership Plan ESPelectrostatic precipitator ESQDexplosive safety quantity distance ESR1. electron spin resonance 2. early storage reserve 3. electroslag remelting 4. equivalent series resistance

ESS1. engineering safeguards system 2. electronic switching system 3. engagement simulation system 4. essential 5. environmental stress screening ESSAelectronically switched spherical array ESSGenvironmental-sensing signal generator E&STemployment and suitability test ESTSCEnergy Science and Technology Software Center (Oak Ridge, TN) ESTSelectronic systems test set esuelectrostatic unit ESUenergy storage unit ESWemergency service water ET1. European (Warning) Terminal 2. event tree ETAestimated time of arrival et al.et alii (and others) ETASelevated target acquisition system etc.et cetera (and so forth) ETCelectrothermal/chemical E/TEexperiment/test engineers ETF1. Experimental Test Facility 2. Engine Test Facility ETHZtranslation: Swiss Federal Technical University in Zurich ETIearly transient incapacitation ETISelapsed-time indicator system ETL/ISGengineer topographic labora-tories/intelligent system group

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ETRelectrothermal response ETS1. energy transfer system 2. electronic translator system ETU1. early training unit 2. environmental test unit ETVeducational television euentropy unit e.u.electron unit EUCOMEuropean Command (US) EUDEDArmy Corps of Engineers, European Division EUNIEEuropean nuclear interface unit EUQSenvironmental unique signal EURATOMEuropean Atomic Energy Community EUVLextreme ultraviolet lithography eVelectron volt EV1. electric vehicle 2. electronic viewing EVE1. exemplary volunteer effort 2. Enterprise-information viewing environment 3. electronic viewing environment EVMelectronic voltmeter (formerly called VTVM: vacuum tube voltmeter; used now to refer to equipment) EVPexecutive vice president EW1. European Warning 2. electronic warfare EWO1. electronics warfare officer 2. Emergency War Order

EWPEmergency War Plan EWSearly warning system EWTemitter wrapthrough EXexemption request EXCOMSexecutive communications system exp1. exponent 2. exponential exptexperiment EXRenergy x-rays EZUextended zone unit

F ffemto (a prefix indicating 10-15) f/16aperture ratio 16 ºFdegrees Fahrenheit F1. farad (electric capacitance) 2. fermi (length equal to 10-15 meter) 3. fluorine (chemical symbol) 4. fuze fafemtoampere FA1. field artillery 2. forward area 3. failure analysis 4. funds advance FAA1. Federal Aviation Administration 2. functional area appraisal FAASVfield artillery ammunition supply vehicle FAATCFederal Aviation Administration Technical Center (Atlantic City, NJ)

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FAC1. fast-acting closure 2. facility FACEfindable accurate, comprehensive, and effective FACETa computer program for model smoothing FACOMField Artillery Command FACPfire alarm control panel FACRfacts, analysis, conclusions, and recommendations FACSfuture armored combat system FACT1. fully automatic compiler-translator 2. Facility for Calibration and Test (Coyote Canyon) 3. Federation of Automated Coding Technologies FADfuzing and arming device FADEfocus, analyze, develop, and execute FADSforce administration data system FAEfuel air explosive FA&Ffuzing, arming, and firing FAID1. fuel assembly identification 2. fuel assembly integrity devices FAISForeign Affairs Information System FAITfacilities asbestos implementation team (see FAMT) FALCONfission-activated laser concept FAMfacility assessment methodology FAMTfacilities asbestos management team (see FAIT) FAN-EFlaming Arrow Network, Europe FAOFederal Agency Order

FAR1. false-alarm rate 2. fly-away round 3. federal acquisition regulation 4. federal aviation regulation FARRfailsafe and risk-reduction (study) FASFederation of American Scientists FAST1. Fourier amplitude sensitivity test 2. future artillery systems technology 3. facilities accelerated system teams FASTCASTdelivers investment cast hardware FATfactory acceptance test FATEfuzing, arming, testing, and evaluation fax or FAXfacsimile message FBAforce-balance accelerometer FBCfluidized bed combustion FBIFederal Bureau of Investigation FBIAforce-balance integrating accelerometer FBISForeign Broadcast Information System FBMfleet ballistic missile FBRfast breeder reactor fc1. flow chart 2. footcandle FC1. full contributor 2. fluorocarbon FCAfunctional configuration audit fccface-centered cubic FCC1. Federal Communications Commission 2. Facilities Command Center (SNL)

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FCCSETFederal Coordinating Council for Science, Engineering, and Technology FCDCflexible confined detonating card FC/DNAField Command/Defense Nuclear Agency FCI1. Fluid Controls Institute 2. fuel-coolant interaction FCLfault current limiter FCOfinal change order FCP1. fuel cycle program (or plant) 2. Field Command Post 3. forward control point 4. fluid coupled plate 5. flight computer program FCRfacilities customer representative FCSfire control system FCSMfield command stockpile management fcstforecast FCTIfuel coolant thermal interaction FDA1. Food and Drug Administration 2. fuel distribution analyzer FDBfield distribution box FDDfacility design document FDDIfiber distributed data interface fdmfrequency-division multiplexing (or multiplexer FDMfixed detection mode FDRfinal development report FDSfence disturbance sensor Feiron (chemical symbol)

FE1. ferroelectric 2. fossil energy 3. facility engineer 4. Facilities Express 5. finite element FEAfinite element analysis FEBfunctional electronic block FEBAforward edge of battle area FECOMFar East Command fed1. federal 2. federated 3. federation FEDSforced entry deterrent system FEMAFederal Emergency Management Agency FEMPFernald Environmental Management Project FEMTRANradionuclide transport model FENCERNATO code for Soviet bomber FEPfront-end processor (computers) FEPCAFederal Environmental Pollution Control Act (1972) FERCFederal Energy Regulatory Commission (DOE) FERFFusion Engineering Reactor Facility FESflight environment sensor FESEMforcible entry safeguards effectiveness model FESOPFacilities Engineering Standard Operating Procedures FESSfront-end security system FET1. ferroelectric transistor 2. field-effect transistor (switch) FEWSfollow-on early warning system

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FFA1. federal facilities agreement 2. freefall airburst FFBDfunctional flow back diagram FFCAfederal facilities compliance agreement FFEfailed fuel element FFGfree fall groundburst FFMfailed fuel mockup FFPfirm fixed price FFRDCFederally Funded Research and Development Center FFSfast-flag sensor FFTfast Fourier transform FFTFFast Flux Test Facility FGDflue gas desulfurization FGISfacilities geographic information system FHARfire hazard analysis report FHSAFederal Hazardous Substances Act (1966) FHWAFederal Highway Administration FIFerrovie Italiane FIBITEfault isolation built-in test FIC1. Financial Information Center 2. frequency interference control FICIfailed instrument component inspection FIDflame ionization detector FIDOfinancial download (tool)

FIDSfacility intrusion detection system FIDU or fidufiducial FIESTAfield safety technical assistance FIFAfissions per initial fissile atom FIFOfirst-in, first-out (for inventory; also used in the computer field as a method of retrieving items) FIFRAFederal Insecticides, Fungicide, and Rodenticide Act Fig.figure (avoid abbreviation; best to spell out) FIGfast ion gauge FIJfacts, inference, and judgment FIMAfissions per initial metal atom FIMSfacilities information management system FIPSfederal information processing standards FIR1. far-infrared (laser) 2. finite impulse response FIRLFranklin Institute Research Laboratory FIS1. financial information system 2. fluoroimmuno sensor FISUGFIS user group FITfield investigation team FITS1. fully instrumented test site 2. focus information technology showcase FKEfracturable keying elements flfluid

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fLfoot lambert (sometimes written ftL) FLAWLESflight analysis by a weighted least-squares (technique) FLC1. Federal Laboratory Consortium 2. Federal Laboratory Commission FLEAflux logic element array FLECHTfull-length emergency core heat transfer FLIRforward-looking infrared FLMPRforward-looking, material-penetrating radar FLOSIMflow simulation (computers) FLOTforward line of own troops FLSAFair Labor Standards Act FLSCflexible linear-shaped charge FLTSATCOMFleet Satellite Communications fmfemtometer (also used as fermi) FM1. frequency modulation 2. Ferromagnetic 3. fully meets 4. function manager 5. field manual 6. factory mutual F-mapfeature mapping FMCSFederal Mediation and Conciliation Service FMDfuel motion detection FMDFfixed-mirror distributed focus FMEAFailure Mode and Effects Analysis FMEFfuels and materials examination facility

FMHRfield material-handling robot FMLAFamily Medical Leave Act FMS1. forms management system 2. financial management service 3. flexible manufacturing system 4. foreign military sales FMSCfixed-mirror solar concentrator fnpfusion point (nuclear technology) FNSIfinding of no significant impact (sometimes written as FONSI) FOfiber optics FOBfree on board FOCfull (or final) operational capability FOCIforeign ownership, control, or influence FODOCSfeasibility of disposal of contaminated soil FOGfuture options group (SNL) FOGM or FOG-Mfiber-optic guided missile FOIAFreedom of Information Act FOLLSfiber-optic liquid level sensor FONSIfinding of no significant impact (more commonly written as FNSI) FORfield of regard FORSCOMForces Command (Army) FORTRANformula translator (or translation) (computers) FOSfiber optic sensor

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FOSDICfilm optical scanning device for input to computers FOTfollow-on operational test FOTLfollow-on to Lance FOVfield of view fpfreezing point FP1. facility personnel 2. fission product FPA1. floating point accelerator 2. Federal Preparedness Agency FPDflame photometric detector FPDRfirst production drawing release FPFFfull power, full frequency FPGAfield programmable gate array FPMRFederal Property Management Regulation FPP1. financial preprocessor 2. floating point processor fps1. frame per second 2. feet per second; also ft/s FPSfence protection system FPUfirst production unit FQRfield quality representative FR1. France 2. Federal Register FRAFederal Railroad Administration FRAMferroelectric random-access memory FRASfission gas release and swelling (computers) FRBfast rise-time breakdown

FR/CPfunctional representatives and counterparts FRDformerly restricted data FREADMfast reactor excursion and accident dynamics nodel (computers) FRECfuel-ringed external cavity FREDfaceted region editor freqfrequency FRERPFederal Radiological Emergency Response Plan FRGFederal Republic of Germany FRMACFederal Radiological Monitoring and Assessment Center FROGfree rocket over ground FROKAFirst Republic of Korea Army FRPfire-resistant pit fsfemtosecond FS1. firing set 2. fuming sulphuric (smoke agent) 3. feasibility study F&SFenix & Scission, Inc. FSA1. fuel sphere assembly 2. firing system assembly 3. forward staging area 4. forward support assembly FSACFacilities Safety Appraisal Committee FSARFinal Safety Analysis Report FSCFederal Supply Classification FSCCFile Support Coordination Center FSDfull-scale development FSEfire-support element

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FSGFederal Supply Group FSKfrequency-shift keying (see PSK) FSL1. Flight-Simulator Laboratory 2. formal semantics language (computers) 3. field storage location FSM1. fail-safe memory 2. financial systems migration FSMBfinancial system management board FSN1. federal stock number 2. Foreign Service National FSOfacility security officer FSPforeign service post FSPSfree-standing plasma-sprayed FSRfunctional security requirement FSRBfuze safety review board FSSfederal supply schedule FSSGForce Service Support Group FSUFormer Soviet Union ftfoot or feet FT1. frame transfer 2. Fourier transform FTEfull-time equivalent (or employee) FTFFalcon Test Facility FTIRFourier transform infrared (spectroscopy) FTISfinancial transaction interface system ftLsee fL ft-lbfpound force per foot

FTMflight test missile ft/minfeet per minute ft3/mincubic feet per minute (preferred over liters per second: L/s) FTOSflight-termination ordnance system FTPfile transfer protocol ft-pdlfoot poundal FTPAField Task Proposal Agreement; see WPAS FTPSfinancial transaction processing system FTQflight test qualification FTRfast test reactor in FFTF FTSFederal Telecommunications System ft/sfeet per second; also fps ft3/scubic feet per second FTSCfault tolerance spaceborne computer FTUflight test unit FUFinsen unit (electromagnetics) FUFOfull fuzing option FUSRAPFormerly Utilized Sites Remedial Action Program fVfemtovolt FVCfiltered vented containment FW1. feed water 2. filter wheel FWAflow weighted average FW/BCRfeed withdrawal/building control room

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FWCAFish and Wildlife Coordination (1958) FWCCfine-weave carbon-carbon fwdforward FWDCFoster Wheeler Development Corporation FWDRFinal Weapon Development Report FWHMfull width, half maximum FWPfield work proposal FWPCAFederal Water Pollution Control Act (obsolete; now Clean Water Act) FWPFfine-weave pierced fabric FYfiscal year FYDPFive-Year Defense Program FYIfor your information FYPPFive-Year Program Plan FZflow zone

G ggram (sometimes gm, but g is preferred) g or Gacceleration due to gravity G-1. gain 2. giga- (a prefix indicating 109) ga or GAgauge GA1. gun assembled 2. genetic algorithms G&Ageneral and administrative GaAgallium arsenide

GaAlAsgallium-aluminum arsenide GACCground attack control capability GADRASgamma detector response and analysis software GAFGerman Air Force (Luftwaffe) G/AITground/airborne integrated terminal galgallon gal/mingallons per minute GAMAgeneration and maintenance area GAOGeneral Accounting Office GAPPglobal atmospheric research program GASglobal antenna system GATGoodyear Atomic Corporation GATERSground-to-air telerobotic system GAWRgraphic arts work request (obsolete; now referred to as service order request: SOR) GBARCGreat Britain Aeronautical Research Council GBEEGovernors Business Executives for Education GBI1. ground-based interceptor 2. graduate business internship GBR-Xground-based radar experiment Gbytegigabyte GCgas chromatograph G&Cguidance and control GCDgreater confinement disposal GCEPgas centrifuge enrichment plant

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GCFBRgas-cooled fast breeder reactor GC/FPDgas chromatograph/flame photometric detector GCMglobal circulation model GC/MSgas chromatographic mass spectrometer GCNground communications network GCRPglobal change research program Gc/sgigacycles per second (obsolete; use GHz) GCSgeneral communications system GD/CGeneral Dynamics/Convair (obsolete; now Lockheed) GDCgeneral design criteria GDEgeologic disposal evaluation GDHgobal data handler GDOgeothermal drilling organization GDPGNT data processor GDSgeneral declassification schedule GDTground data terminal GEGeneral Electric (Company) GE-BRDGeneral Electric, Breeder Reactor Division GEM1. generator, electronic marker 2. graduate in engineering for minorities (summer program) GENDDGeneral Electric Neutron Device Department (now the Pinellas Plant) GENSERgeneral service

GEONDSGround EMP Optical NUDET (nuclear detonation) System GEOTEMPgeological temperature (computers) GEP1. ground entry point 2. graduate education program GESMOgeneric environmental statement on mixed oxide GESSgenerator exhaust signature suppressor GETSgroup emergency telephone system GeVgigaelectron volt GFCIground fault circuit interrupter GFEgovernment-furnished equipment GFIground fault interrupter Gflops/sfloating point operations per second GFPGovernment-Furnished Property (property assigned to commercial and educational institution subcontractors) GFSgovernment-furnished software Gggigagram GGGNT gateway G&Ggeophysical and geodedic GHAground hazard area GHPgeothermal heat pump GHQGeneral Headquarters Ghzgigahertz Gigilbert

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GIDEPgovernment-industry data exchange program GIEground interface electronics GIF1. Gamma Irradiation Facility 2. guaranteed interest fund GIGOgarbage in, garbage out (computers) GIPgeotechnical instrumentation package GIS1. gas-insulated substation 2. geographic (or global) information system GISCgeneric intelligent system controller GISPgeotechnically instrumented seafloor probe GISSPgeotechnical in situ strength probe GJPOGrand Junction Projects Office (DOE) GLgeneral linear GLCMground-launched cruise missile GLONASSGlobal Navigation Satellite System (Soviet Union) GLTglycine-L-tyrosine (a typical drug molecule) gmgram (it is preferable to use g) g/m3grams per meter cubed GM1. General Motors 2. geometry modeling G-MGeiger-Mueller counter GMBglass microballoon GMCguided missile cruiser (nuclear) GMCPground maintenance computer program

GMTGreenwich mean time gmvgram-molecular volume GNRgeneral nuclear release (or response) GNSglobal navigation system GNTground NUDET terminal GOgovernment obligations GOCOgovernment-owned, contractor-operated (DOE) GOESgeostationary operational environmental satellite GOPgeneral output GOSIPGovernment Open Systems Inter-connect Profile GOSSATGroup on Soviet Science and Technology GOXgaseous oxygen GPgeneral purpose GPagigapascal GPAgrade point average GPBTOgeneral-purpose, barbed-tape obstacle (concertina) GPC1. gas permeation chromatography 2. giant piston core GPEgeneral plant equipment (see GPP) GPIBgeneral purpose instrumentation bus gpmgallons per minute GPMPPgroundwater protection management protection plan GPOGovernment Printing Office

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GPP1. General Plant Project 2. general-purpose plant (equipment) (see GPE) GPRground-penetrating radar GPS1. global positioning system 2. global positioning satellite 3. gas purification system 4. groundwater protection strategy gr1. grain 2. gross GRADINgradient inverse GRASERgamma-ray laser GRASSgas release and swelling subroutine (computers) GRIGas Research Institute GRINSHgraded index separate-confinement heterostructure GRISgamma-ray imaging system (or spectrometer) GROgamma-ray observatory grpground reference point GRS1. global receiver system 2. general records schedule 3. Geoscience and Remote Sensing (Journal) GRUtranslation: Soviet Intelligence Directorate of the General Staff GSgeological survey GSAGeneral Services Administration (Agency of the Federal Government) GSACgas-sealing auxiliary closure GSE1. ground support equipment 2. group of scientific experts GSFGeoelectric Simulation Facility

GSFCGoddard Space Flight Center GSLgeneral scattered light (version of SPIRITS) GS/MSgas chromotography/mass spectrometry GSSEground system support engineer G/T(ratio of) gain (noise) to temperature GTAgas tungsten arc GTCCgreater than Class C gtd.guaranteed GTDAgeneral (license) technical data and annotation GTEGeneral Telegraph and Electric (Company) GTM1. ground test missile 2. gang temperature monitor GTPPgas transfer pilot project GTRGovernment Travel Requisition GTS1. guidance test set 2. ground test missile 3. gas transfer system GTSNglobal telemetered seismographic (or seismic) network GTUground test unit GTUFG-tunnel Underground Facility GUIgraphics (or graphical) user interface GUIDARguided intrusion detection and ranging GUILDgovernment, university, industry, and laboratory development

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GVganged valve GVIgraphic users interface G/VLLDground/vehicular laser locator designator GVLSglobal verification locating system GVRgas volume ratio GVWRgross vehicle weight rating gwground water; also groundwater GWgigawatt GWENground wave emergency network GWOAguerilla warfare operational area GWSgeneral war system Gygray (unit of radiation dosage) GZground zero (nuclear detonation)

H h- hecto- (a prefix indicating 102) hhour (also hr) H1. henry (electric inductance) 2. horizontal 3. hazardous (materials, substances, and wastes) hahectare HAAheterogeneous aerosol agglomeration (computers) HABEhigh altitude balloon experiment HACheliostat array control

HACVheavy armored combat vehicle HADhazard assessment document HAFhigh-altitude fuze HAGARHighly Agile Ground Assessment Robot HAIhazard assessment information (HAI form is obsolete) HAMOChammer analysis method of char-acteristics (computers) HAPhazard analysis process HARChelicopter accident-resistant container HARP1. hazards assessment of rocket propellants (terminated in 1989) 2. high altitude research project HAShardened aircraft shelter (see PAS) HASPhealth and safety plan HATShazard abatement tracking system havhaversine HAWhypersonic aerodynamic weapons HAWThorizontal-axis wind turbine HAZheat-affected zone HAZCOMhazard communication rule HAZMAT (or HazMat)hazardous material HAZOPhazard and operability HAZWOPERhazardous waste operations and emergency response HAZWRAPhazardous waste remedial action program

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HBCUHistorically Black Colleges/Universities HBVHepatitis B virus HC1. hexachloroethane (screening smoke) 2. honeycomb 3. hazard class 4. hydrocarbon HCAhigh contamination area HCC1. Headquarters Communications Center 2. Headquarters Command Center (SNL) HCDAhypothetical core disruptive accident HCEhealth consultation evaluation HCFHot Cell Facility HCFChydrogenated chlorofluorocarbon HClhydrochloric acid HCMhigh-current mode hcphexagonal close packed HCPhearing conservation program HCSAhealth care spending account HDhigh density HDCHeadquarters Data Center HDLHarry Diamond Laboratories (Adelphi, MD) HDPhigh delta pressure HDRhot dry run HDShydrodesulfurization HDTVhigh-definition television HDWHanford defense waste HDXhalf-duplex (circuits)

HE1. high explosive 2. human error HEAFHigh Explosive Application Facility HEARThardened electronics and radiation technology HECTRhydrogen event containment transient response HEDhigh energy density HEDIhigh endoatmospheric defense interceptor HEDLHanford Engineering Development Laboratory (Washington) HEEDhigh energy electron diffraction HEEFa boundary element solution HEGFhigh energy gas fracturing HELHuman Engineering Laboratory HELIAhigh energy line induction accelerator HELIOScomputer analytic code in heliostat technology HELPhigh energy laser program HEMhomogeneous equilibrium model (computers) HEMPhigh altitude electromagnetic pulse HEPhuman error probability HEPAhigh efficiency particulate air (or aerosol) (filter) HERCheavy equipment remote control HERLHealth Effects Research Laboratory

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HERMEShigh energy radiation megavolt electron source HEROhazards of electromagnetic radiation to ordnance HETThigh explosive transit time HEUhighly enriched uranium HEWhealth, education, and welfare hex1. hexagonal 2. Hexadecimal HF1. high frequency 2. hydrogen fluoride HFAhuman factors analysis HFCfluorinated hydrocarbon hfdfhigh frequency direction finder HFIRhigh flux isotope reactor hfshyperfine structure HFSHuman Factors Society HFSEhigh frequency seismic element Hgmercury (chemical element) H-gearhandling gear HGUhand geometry unit HGVhypersonic glide vehicle HHChigh heat capacity HHFCDPhigh heat flux component development program HIACAhigh intensity, adjustable cobalt array HIDShighly integrated detonation system HIP1. hazard identification process 2. howitzer improvement program

HIPOhigh (incident) potential HIPORShigh power radiation source hi-pothigh potential HIPPIhigh performance parallel interface HIRAhazard identification and risk assessment HIRAChazards identification, recording, and correction (system) (Sandia/CA) HIRCIShigh resolution capacitive imaging sensor HISHoneywell information system HISAChigh speed airdrop container (system) HITAFhigh temperature advanced furnace (DOE) HIT-SARHighway TransportationSafety Analysis Report HITECHispanic (and American Indian) Technical Education Center HIVhuman immunodeficiency virus HJHonest John (missile) HKHefner candle (optics) HLFMhigh level flux monitor HLGHigh Level Group (NATO Nuclear Issues Group) HLGPThigh level general-process trash HLLWhigh level liquid waste HLOCHispanic Leadership and Outreach Committee

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HLOShorizontal line of sight HLWhigh level waste HM1. hazardous material 2. health monitoring HMC1. hybrid microcircuit 2. HazMat (On-Scene) Commander HMEAhazard mode and effect analysis HMLhard mobile launcher HMMWVhigh mobility multipurpose wheeled vehicle HMOHealth Maintenance Organization HMPEhigh modulus polyethylene HMShazardous materials storage HMT1. hazardous materials transportation 2. hazardous materials table HMTAHazardous Materials Transportation Act HMXhigh melting explosive H&NHolmes and Narver, Inc. HNABhexanitroazobenzene (explosive) HNLHolified National Laboratory HNShexanitrostilbene (explosive) Hoholmium (chemical symbol) HOBheight of burst HOChalogenated organic compound HOEhoming overlay experiment HOFShybrid optical firing set HOIShostile intelligence service

HOMhomology HOMOThands on/minds on technology (see MANOS) HOPhigh oxygen pressure HOPEhypothetical overpower excursion (computers) Horizonautomated client-server library system that replaces DOBIS. Horizon serves as the librarys on-line catalog. HOTPIMhydrodynamics or two-phase internal mixture (computers) hphorsepower HP1. health physics (or physicist) 2. Hewlett-Packard 3. high pressure 4. high performance HPARhealth physics anomaly reporting HPCChigh performance computing and communication HPD1. Health Protection Division (DOE) 2. hearing protection device HPFLHigh Performance Fuel Laboratory HPIhazard potential index HPLChigh performance liquid chromatography HPMhigh power microwave HPOFhigh pressure oil-filled HPPPhigh pressure pump pad HPRFhigh power radio frequency HPRShigh pressure recirculation system HPSShigh performance storage system

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HPThigh potential tester H, P, T, & Ehand, power, thermal, and explosives (attack tools) HQheadquarters HQDAHeadquarters, Department of the Army HQSACHeadquarters Strategic Air Command hr or hhour HR1. human resources 2. heavy replica HRA1. health risk appraisal 2. high radiation area HR/ARhigh reflectance/antireflectance HPOFhigh pressure oil-filled HRCQhighway route controlled quantity HRD1. human resources development 2. heavy replica decay HRIShuman resources information system HRM1. health risk management 2. Hoisting and Rigging Manual (DOE) HRS1. heat rejection system 2. hazard ranking system HRTEMhigh resolution transmission electron microscopy HShydrogen sulfide HSBHuman Studies Board (SNL) (frequently called Institutional Review Board) HSEHealth, Safety, and Environment Division (DOE) HSLhue, saturation, lightness

H&SMHealth and Safety Manual (DOE) HSMCDRhigh speed multichannel data recorder HSPHealth and Safety Plan HSRhelical screw rheometer HSShazard separation system HSSThouse science, space, and technology HSTFHeated Screen Test Facility HSWAHazardous and Solid Waste Amendment htheight HT1. high temperature 2. tritium HTAhigh temperature alarm HTCheat transfer coefficient HTGChigh temperature gas cleanup HTGRhigh temperature, gas-cooled reactor HTIRhigh temperature insulation resistance HTKhard to kill HTLDHigh Technology Light Division (Ft. Lewis) HTMLA set of language codes that enable documents to use hypertext, images, sound, and video. HTO1. tritium water 2. tritium oxides HTRBhigh temperature reverse bias HTS1. high temperature superconductor 2. hyperchannel terminal server HTTThigh temperature turbine technology

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HUDDepartment of Housing and Urban Development (US) HUMINThuman intelligence hv or HVhigh voltage HVAhigh velocity accelerator HVACheating, venting, and cooling HVBhigh voltage breakdown HVLhypervelocity launcher HVPhypervelocity projectile HVPShigh voltage power supply HVRhigh voltage ratio HVTShead and video transmission subsystem H/Whazardous waste HWChardware component HWCIhardware configuration team HWGhydrodynamic group HWMFHazardous Waste Management Facility HWRheavy water reactor HWSHartmann wavefront sensing HWThypersonic wind tunnel HXheat exchanger HYDAC1. hybrid dynamic (material) control 2. hybrid digital-to-analog converter Hzhertz (unit of frequency; also known as cycles per second)

Hz/shertz (or cycles) per second

I IA1. implosion assembled 2. interface adapter 3. independent assessment 4. incident action 5. instrument air IABTIInternational Association of Bomb Technicians and Investigators IACimage analysis chip IACMAGInternational Association for Computer Methods and Advances in Geomechanics IACROinteragency cost reimbursement order IACSInternational Annealed Copper Standard IACSEInteragency Advisory Committee on Security Equipment IADSigloo access denial system (This system has evolved into the weapon access delay system: WADS.) IAEAInternational Atomic Energy Agency (Vienna, Austria) IAEPInternational Assessment of Educational Progress IAGinteragency agreement IAI1. Israel Aircraft Industries 2. Inter-national Association for Identification IAMInternational Association of Machinists (SNL/CA) IANUSintegrated analysis of nuclear systems (computers)

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IAS1. Institute of Aerospace Sciences 2. item accounting system IASTEDInternational Association of Science and Technology for Development IATAInternational Air Traffic Association IAWin accordance with IBESTion beam surface treatment ibid.ibidem (in the same place) IBM1. intermediate-range ballistic missile (see IRBM) 2. International Business Machines, Inc. IC1. integrated circuit (or chip) 2. inductance capacitance 3. intracloud 4. integrated con-tractor 5. internal combustion 6. Incident Commander 7. isolation condenser I/Cinjector/combustor I&Cinstrumentation and control ICAitem-controlled area ICAOInternational Civil Aviation Organization ICADSintegrated correlation and display system ICB1. interconnecting box 2. interface control board ICBMintercontinental ballistic missile ICCBinterconnecting cable and control box ICCDintensified charge-coupled device ICCTTInternational Consultative Committee for Telephone and Telegraph ICDinterface control document (or drawing)

ICE1. internal combustion engine 2. intelligence computing environment 3. interactive concurrent engineering 4. interactive collaborative environment 5. In-circuit emulator ICECOImplicit Continuous Eulerian Containment Code (computers) ICECO-HICECO hydrodynamic ICECO-HTICECO heat transfer ICEPELICECO piping and elbow (analysis) ICF1. insurance continuance fund 2. inertial confinement fusion ICFAXintegrated circuit failure analysis expert (system) ICFMin-core fuel management ICMinterim corrective measure ICMGintelligence community modeling group ICNinterim change notice ICO/FAOintegrated contractor order and federal agency order ICP-MSinductively coupled plasma mass spectrometry ICPNintegrated combat procedures (nuclear) ICPPIdaho Chemical Processing Plant ICRUinternational commission on radiological units (and measurements) ICRPInternational Council on Radiation Protection ICS1. intermittent control system 2. Intelligence Center School (Army)

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3. integrated contractor system 4. inventory control system 5. incident command system ICT1. International Critical Tables 2. inter-case transfer 3. interface control team ICU1. interconnecting unit 2. interface control unit 3. integrated control unit ICV1. inner containment vessel 2. intimate container vault icwinterrupted continuous wave (e.g., Morse code) ID1. inside diameter 2. identification 3. image dissector 4. integrate demonstration (site) 5. Idaho Operations Office (DOE) IDA1. intrusion detection alarm 2. Institute for Defense Analysis IDASintegrated data acquisition system IDBintegrated database IDDintegrated data denial (decryption) IDE1. intrusion detection equipment 2. interactive development environment IDEAintegrated development environment and assistance (or assistant) IDL1. interactive data language 2. inter-disciplinary laboratory IDLHimminent danger to life or health IDMMintegrating digital multimeter (computerized measurement) IDOinternal distribution only IDP1. integrated data processing 2. intrusion detection process IDR1. intermediate distribution room 2. Internet Domain Routing

IDS1. integrated diagram system 2. information display system 3. intrusion detection system IDSNintegrated digital services network IDSTintrusion detection system technology IDUinterface demonstration unit i.e.id est (that is) IE1. inspection and enforcement 2. industrial engineering I&Einspection and evaluation (protects DOE assets) IEAInternational Energy Agency IECInternational Electrochemical Commission IECEintersociety energy conversion engineering IED1. individual effectiveness development 2. improvised explosive device IED/PEPindividual effectiveness development and performance enrichment program IEDSimprovised explosive device sterilizer IEEEInstitute of Electrical and Electronics Engineers, Inc. IEGindependent evaluation group IEITintegrated engineering information technology IEMATSimproved emergency message automatic transmission system IEMPinternal electromagnetic pulse IER1. information engineering release

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2. internal engineering release IES1. Illuminating Engineering Society 2. Integrated Enabling Services IESCSinternal (or integrated)/external security and C2 systems if or IFintermediate frequency IFAionization front accelerator IFCin-flight control IFDin-flight-disconnect (connector) IFEin-flight extraction IFFidentification, friend or foe IFI1. in-flight insertion 2. inspector follow-up item IFM1. interface memorandum 2. interfacial force microscope IFRion-focused regime IFRFInternational Flame Research Foundation IFRLInternational Flame Research Foundation IFRSintelligent facial recognition system IFSintegrated file system IFSARinterferometric synthetic aperture radar IFVinfantry fighting vehicle IG1. inertia guard (sensor) 2. interconnecting group 3. Inspector General IGBinner-German border IGES1. initial graphic exchange standard 2. initial graphics exchange specification

3. interactive graphics exchange system IGFMinternal gamma flux monitor IGRimpulse graphite reactor IGS1. interior guard station 2. IONDS global segment IGUAInternational Guards Union of America (obsolete; now Independent Security Police Association) IGZindicated ground zero IH1. industrial hygiene 2. inert head 3. inner housing IHDin-house dissertation IHEinsensitive high explosive (see CHE) IHEMIn-house Energy Management (WIPP) IHGin-house general (software) IHPin-house preparation IHS1. isotopic heat source 2. in-house special (software) IHTSintermediate heat transport system IHXintermediate heat exchanger IIEInstitute of International Education IIFinterest income fund IIR1. interim IEMATS replacement 2. Infinite (length) impulse responses IISinteragency information study ILABinter-laboratory advisory board ILCIndividualized Learning Center ILFinfra-low frequency

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ILHimploding linear hohlraum ILLWintermediate-level liquid waste ILRTintegrated leak rate test ILSintegrated logistics support ILSPintegrated logistics support plan ILTinter-line transfer ILWintermediate-level liquid waste Imimaginary IMDIintegrated manufacturing design initiative IMETSintegrated meteorological system IMF1. Improved Message Facility 2. Integrated Maintenance Facility 3. Intermediate Maintenance Facility IMFWGinteragency metal forming working group IMOInternational Maritime Organization IMOG1. interagency manufacturing operations group 2. interagency mechanical operations group IMP1. intelligent mobile platform 2. integrated mission processing IM-PMTinformation management/ process management team IMPRESSARIOintegrated multiple platform for remote-sensing simulation and real-time interactive operation IMRintegrated management requirement IMRLIntegrated Materials Research Laboratory

IMS1. intrusion monitoring system 2. ion mobility spectrometer (or spectrometry) 3. image management system 4. information management system IMTLIntegrated Manufacturing Technologies Laboratory IMUinertial measurement unit in.inch or inches Inindium (chemical symbol) INintelligence I/Ninspection and maintenance INAIGAPindium aluminum gallium phosphide INCinsertable nuclear component INDimprovised nuclear device INEinertial navigation element (or equipment) INEELIdaho National Engineering and Environmental Laboratory INEPTinsensitive nucleus enhancement by polarization INEWSintegrated electronic warfare system infinferior INFintermediate-range nuclear force INMMInstitute of Nuclear Materials Management INOFIntegrated Nuclear Operations Facility INPOInstitute of Nuclear Power Operations InRad or INRADintrinsic radiation

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in./sinches per second (use ips for wire and tape speeds) INS1. inertial navigation system 2. Immigration and Naturalization Service INSARintegrated nuclear safety analysis report INSIinitial nuclear safety (or surety) inspection INSPECInformation Services for Physics, Electronics, and Computing INTELSATinternational consortium for communications satellites INUinertial navigation unit IOintelligence officer I/Oinput/output IOCinitial operational capability IOCDinitial operational capability date IOCSinput/output control system IOISinput/output interface system IOMinert operational missile IONDSintegrated operational NUDET detection system IORVinadvertently opened relief valve IOS1. Institute of Oceanographic Sciences 2. input/output subsystem IOSAFSintegrated optical safety, arming, and firing system IOUInternational Octel Users IP1. integrated perimeter 2. initial production 3. integration project (or program) 4. interface processor

IPAindividual performance award IPARSintegrated procurement/accounts (payable and) receiving system IPBillustrated parts breakdown IPCinterprocess communication IPDimplementation phase document IPDPindividual personnel development plan IPEindividual plant examination IPFimage processing function IPGinterproject group IPLInformation Processing Language (computers) IPlanImplementation Plan IPMintegrated pest management IPPindustrial partnership (or partnering) program IPPPSintegrated perimeter physical protection system IPR1. in process of review 2. impulse response ipsinches per second (used for wire and tape speeds) (see in./s) IPS1. information procurement system 2. integrated procurement system IPS/Eintegrated procurement system/ extended IPS/Rintegrated procurement system/ replacement IPSTinitial production systems test

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IQAIndependent Quality Assessment Iriridium (chemical symbol) IR1. infrared radiation 2. insulation resistance IRIindustrial risk insurer IRA1. impact ratio analysis 2. International Research Association IRBMintermediate-range ballistic missile (often called IBM) IRBSintermediate-range booster system IRCinspection record card IR&D1. industry research and development 2.internal research and development IREInstitute of Radio Engineers IREPIntegrated Reliability Evaluation Program IRIGinter-range instrumentation group IRIS1. infrared intrusion sensor 2. intelligent robotics inspection system 3. imaging radicals intersecting with surfaces 4. Incorporated Research Institutions for Seismology 5. integrated risk information system IRM1. isothermal remanent magnetization 2. information resources management 3. interim remedial measure IRMAIR modeling and analysis IRMSintegrated resource management system (obsolete, now integrated services management system) IRNinternal restricted network (obsolete now SRN)

IROEintelligent robot operating environment IRQinterrupt request IRRVintermediate-range reentry vehicle IRSinterim recovery system IRSSYinfrared signature system IRTinactive record transfer IRUitem reporting units IRVinterim reentry vehicle (parachutes) IR/V/UVinfrared/visible/ultraviolet IS1. information system 2. information service 3. inactive stockpile I/Sinflation/spin-up ISA1. International Security Affairs 2. Inter-national Standard Atmosphere 3. inertial sensor assembly 4. industry standard architecture 5. interservice support agreement 6. Instrument Society of America ISAACin-hours stand-alone computer course ISASintegrated small artillery synthesis ISATinformation systems advance team ISBindependent sideband (modulation) ISC1. Instrument Sector Committee (sub-division of ANMC) 2. integrated systems checkout ISD1. interface sequence document 2. instructional systems design ISDNintegrated services digital network ISE1. ideas in science and electronics 2. ion selective electrode

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ISECinsider (or internal) security ISEMinsider safeguards effectiveness model ISFSIindependent spent-fuel storage installation ISHMInternational Society for Hybrid Microcircuits ISHTEin-situ heat-transfer experiment ISI1. Internal Systems, Inc. 2. Integral Systems, Inc. 3. Institute for Scientific Information 4. in-service inspection ISIMUISHTE simulation ISIS1. integrated storm information system 2. integrated security information system ISITintensified silicon intensified target ISLRintegrated sidelobe ratio ISLSintent stronglink switch ISNinternal secure network (SNL) ISMSIntegrated Safety Management System ISO1. International Standards Organization 2. International Security Operations ISO OSIISO open systems interconnect ISOSHLDisotope shielding calculations (computers) ISP1. integrated simulator program 2. Inter-national Security Policy ISPAIndependent Security Police Association (formerly International Guards Union of America) ISPOInternational Safeguards Project Office

ISR1. interrupt service routine 2. Inter-national Survey Research (Corporation) IS&RCIntelligent Systems and Robotics Center ISSintegrated security system ISSMIntegrated Safeguards and Security Management ISSNinternational standard serial number ISSWInternational Symposium on Shockwaves IST1. integrated simulated testing 2. infrared search and track 3. in-situ treatment 4. in-service testing ISTEAIntermodal Surface Transportation Efficiency Act ISTMInternational Society for Testing Materials ISTVintra-site support transport vehicle ISV1. in-situ vane 2. in-situ vitrification ISVPindividual small value purchase ITItaly I&Tintegration and testing ITAindependent technical assessment ITAGintertial terrain-aided guidance ITARinternational traffic in arms regulations ITC1. International Training Course 2. Integrated Textile Complex ITERInternational Thermonuclear Experimental Reactor

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ITI1. ion track instrument 2. incoming test and inspection ITISintegrated technical information system ITLintent to launch ITMSion trap mass spectrometer ITOSSintent trajectory operated signal source ITPinternational technology program ITRinformation technology resources ITRIInhalation Toxicology Research Institute (SNL) ITSIntegrated Tiger Series ITUInternational Telecommunications Union ITV1. improved tow vehicle 2. instructional television ITW&Aintegrated tactical warning and assessment ITW/AAintegrated tactical warning/attack assessment IUOinsulated uranium oxide IUQSintent unique signal IVindependent verification IVAFindependent vulnerability assessment facility IVANindependent vulnerability analysis IVHSintelligent vehicle highway system IVRinteractive voice response IVSNinitial voice switched network (NATO)

IV&Vindependent validation and verification IWDRinterim weapon development report IWGinterface working group IWRPindustrial waste reduction program IXion exchange

J Jjoule (work, energy, quantity of heat) JAjob assignment JAAFJoint Action Armed Forces JAANJoint Action of the Army and Navy JACJoint Apprenticeship Committee (or Council) JADJoint Application Design JAEICJoint Atomic Energy Intelligence Committee JAERIJapanese Atomic Energy Research Institute JAIEGJoint Atomic Information Exchange Group (US/UK) JANNAFJoint Army, Navy, NASA, Air Force JANUSname of the Nd glass laser system JASTJoint Advanced Strike Technology JAWSjust another weld simulator JAWTIGJoint Atomic Weapon Technical Information Group

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JBjunction box JBFSAWJoint Board on Future Storage of Atomic Weapons JCFMJoint Chiefs of Staff Memorandum JCLcontrol language commands for controlling job flow JCMPOJoint Cruise Missile Project Office JCOjustification for continued operation JCSJoint Chiefs of Staff (DoD) JCSANJCS alerting network jctjunction J/degjoule per degree JDLJoint Directors of Laboratories (DOE) JDSSCJoint Data Services Support Center JEACJoint Electric Armaments Committee JEDECJoint Electron Device Engineering Council JEEPJoint Emergency Evaluation Plan JERIJapan (Atomic) Energy Research Institute JETJoint European Tours JEWCJoint Electronic Warfare Center JFETjunction field-effect transistor JFSCJoint Firearms Safety Committee JFTPJoint Flight Test Plan JIJohnston Island JIICjunction-isolated integrated circuit

JINMMJournal of the Institute of Nuclear Materials Management JINTACCSJoint Interoperability for Tactical Command and Control Systems JIT1. joint interface test 2. Just-in-Time (purchasing system) JITFJoint Interface Task Force J/Kjoule per kelvin JMHJoint Mission Hardware JNACCJoint Nuclear Accident Coordinating Center JNWPSJoint Nuclear Weapons Publication System JOCGJoint Ordnance Commanders Group JOMJournal of Minerals JONjudgment of needs JOPESJoint Operation Planning and Execution System JORJoint Operational Requirement JOSSJohnniac open shop system (computers) JOTSJoint operational telephone system JOVIALJules (Schwartz) Version of the Inter-national Algorithmic Language (computers) JOWOGJoint Working Group (US/UK bilateral defense agreement) JPLJet Propulsion Laboratory JPMOJoint Program Management Office JPOJoint Program Office

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JPTJournal of Petroleum Technology JRADSJoint response assessment data system JRC1. Joint Reconnaissance Center 2. Joint Research Center (Ispra, Italy) JREREJournal of Radiation Effects, Research and Engineering JRMBJoint Requirements and Management Board (formerly DSARC) JRSCjam-resistant secure communications JRSWGJoint Reentry Systems Working Group Agreement (US/UK) JSAjob safety analysis J-SIDDSJoint Services interior intrusion detection system JSPjacketed soft point JSRjump to subroutine JSSINJoint staff system information network JSSISJoint staff support information system JSSPJoint stockpile sampling program JSTPSJoint strategic target planning staff JTAJoint test assembly JTACMSJoint tactical missile system JTAGJoint test action group JTC3AJoint Tactical Command, Control, and Communications Agency JTFJoint task force JTFCJoint Tactical Fusion Center

JTGjoint task group JTIDSJoint tactical information distribution system JTPRJoint technology panel for robotics JTSJoint test subassembly JTSMGJoint theatre surety management group JTUJoint test unit JTWGJoint test working group JVEJoint verification experiment JWGJoint working group

K kkilo (prefix indicating 103) K1. kelvin (thermodynamic temperature; since 1967 the degree symbol has been discontinued with K) 2. kayser (unit of reciprocal length, known as rydberg) 3. thousands: e.g., $10K = $10,000 4. kilobyte (sometimes written kbyte or KB) kAkiloampere KAFBKirtland Air Force Base (NM) KAOKirtland Area Office (DOE) KAVEK-nearest neighbor average kbkilobar (also kbar); kilobit KBkilobyte (see kbyte) Kbarkilo bar

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kb/s or kbpskilobits per second kbytekilobyte (see K or kbyte) kckilocycle (obsolete; use kHz instead) KC or KCPKansas City Plant (see BKC or AS/KCD) KC3Kirtland Community Coordinating Council kcalkilocalorie (also known as kilogram-calorie, kg-cal) KCAOKansas City Area Office (DOE) KCASknots calibrated airspeed KCDKansas City Division of the Allied Signal Aerospace Corporation (also see AS/KCD and BKC) kCikilocurie kc/molkilocalories per mole kc/skilocycle per second (use Hz instead) KEkinetic energy kerkernel keVkilo electron volt KEWkinetic energy weapon KFkey finding kftkilofeet (SI units preferred) kgkilogram kGkilogauss KGBSoviet Ministry of State Security (translation) kg calkilogram-calorie (see also kcal)

kgfkilogram force kgmkilogram-meter Kg-m2kilogram-meter squared KHreconnaissance satellite series designator kHzkilohertz KIstress intensity factor for Mode I crack opening (see KIc) KIASknots indicated airspeed KIccritical stress intensity factor for Mode I crack opening (see KI) kinkinetic kipkilopound kJkilojoule KKRKorringa-Kohn-Rostoker kLkiloliter kLDthousands of level detectors kmkilometer km/hkilometer per hour KMRKwajalein Missile Range KMSKMS Fusion Inc. km/skilometers per second knknot (speed) KN or kNkilonewton kNMkilo nautical miles kohmkilo ohm KOPknowledge of process

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KORknowledge of results KPknown precedent K&PKoogle and Pouls (Engineering) KPLKey Personnel Locator KPPKnowledge Preservation Project kradkilorad KREMSKierman reentry measurement system Krfkrypton-fluoride KSC1. Raman Sciences Corporation 2. Kennedy Space Center ktkiloton KTACSKorean tactical air control system KTASknots true airspeed KTFKauai test facility (Hawaii) KUMDknow, understand, manage, and document KUMSCKirtland Underground Munitions Storage Center (or Complex) kVkilovolt kVAkilovolt ampere kvarkilovar KVMKerr voltage monitor kVpkilovolt potential kWkilowatt kWekilowatt of electrical energy kWhkilowatt hour

KWIkey word index kWtkilowatt of thermal energy

L L1. US symbol for liter. 2. lambert (unit of luminance) 3. loop 4. link (as in L1) LAlimited area LAAOLos Alamos Area Office (DOE) LAARClightweight, air-transportable, accident-resistant container LABCOMLaboratory Command (Army: Adelphi, MD) LAClightning arrester connector LACElow (power) atmospheric compensation experiment LADAR1. laser detection and ranging 2. laser radar LADDlow angle drogue delivery LAFOLos Alamos Field Office (DOE) LAMPLagrangian measurement platform LAMPFLos Alamos Meson Physics Facility LANlocal area network LANCEdual capable, short range missile (Army) LANLLos Alamos National Laboratory LANTCOMAtlantic Command LANTIRNlow altitude navigation targeting infrared night

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LAPLivermore assessment program LAPRADSlow altitude parachute retrorocket air-drop system LARSlaser articulated robotic system laserlight amplification by stimulated emission of radiation (originally an acronym, but now accepted as a word) LASS1. laser spark spectroscopy 2. large area smoke system latlatitude LAT1. lock and tumbler 2. local area terminal (or transport) 3. lot acceptance test LATALos Alamos Technical Associates LAVlight armored vehicle LAWlight anti-tank weapon LAZAPlaser application lbpound lbfpound force lbf/ftpound force per foot lb/ftpounds per foot lb/ft2pounds per square foot (see psf) lb/ft3pounds per cubic foot (sometimes written as pcf, but lb/ft3 is preferred) lb/in.pounds per inch lb/in2pounds per square inch (also psi) lbmpound mass LBNLLawrence Berkeley National Laboratory

LBRlarge breeder reactor LBRVlarge ballistic recovery vehicle LBTSland-based test site LC1. liquid chromatography 2. liquid crystal 3. load car 4. laser communication 5. labor costs 6. lethal concentration 7. locked closed LCAClanding craft air cushion LCBLaboratory Coordinating Board LCC1. lifecycle cost 2. Launch Control Center 3. launch control console LCCAleadless chip carrier assembly LCD1. local control and display 2. liquid crystal device (or display) LCE1. laboratory component evaluation 2. launch control error LCFlatent cancer fatalities LCGlaunch control group LCMleast common multiple LCOlimiting condition of operations LCPLifecycle Plan LC-SC1. launch control to security control 2. launch control security car LCSSlightweight camouflage screening system LCTlaboratory component test LCTFlost circulation test facility LCTPlaboratory component test program LD1. laser diode 2. lethal dose 3. laydown 4. logistics demonstration

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L/D1. link/diameter 2. Lift/drag 3. Level detector (unit) LDAlasar diode array LDASlaboratory document accountability system LDI1. (Bell) Laboratories design information 2. laser diode ignition Ldnequivalent day/night (sound level) LDRland disposal restriction LDRDLaboratory Directed Research and Development LDSlaser dazzle sight LDVlaser Doppler velocity LDWloss damage waiver LE1. low explosive 2. low exposure LEAP1. Livermore Employees Assistance Plan (or Program) 2. lightweight exoatmospheric projectile LEBAline source electron beam annealing LECIVAlow-energy, charge-inducted voltage alteration LECSliquid effluent control system LEDlight-emitting diode LEElogistical evaluation exercise LEEDlow-energy electron diffraction LEFlaser-excited fluorescence LEGlogistical evaluation group LEGMlow energy gamma monitor

LEHRLaboratory for Energy-related Health Research LELlower explosive limit LEMUFlimit of error on material unaccounted for LEPlow-emissions partnership LEPClocal emergency planning committee LERlicensee event report LERC1. Lewis Research Center 2. Laramie Energy Research Center LES1. launch enable switch 2. loaded equipment section LETlinear energy transfer LETCLaramie Energy Technology Center LEUlow-enriched uranium LEVlocal exhaust ventilation lf or LF1. low frequency 2. live fire LFBSRlinear feedback shift register LFE1. L-band front end 2. liquid field emission LFLlower flammable limit LFRlive fire range LGBlaser-guided bomb LGVSSlight grid vault surveillance system LHlabor hour LHeliquid helium LHP1. Lovelace Health Plan (NM) 2. leadless hermetic package

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LHSLatin hypercube sampling LHXlight-helicopter experiment LIClow-intensity conflict LICAlow-intensity cobalt array LiDlithium deuteride LIDARlight detection and ranging LIFlaser-induced fluorescence LIFEanalysis of in-pile fuel elements (computers) LIFOlast-in, first-out LIGAa German acronym for lithography, electroplating, and molding LiHlithium hydride LIHElight-initiated high explosive limlimit lim inflimit inferior lim suplimit superior lin1. lineal 2. linear linaclinear accelerator LINCLaboratory information network committee LINKLaboratory information network LINPACKa massively parallel benchmark problem LIOCSlogical input/output control system (computers) LIPSlaboratory integration and prioritization system (part of ISMS)

LIRBlithium ion rechargeable battery LISLaboratory information system LISAlinear infrared scanning array LISNline impedance stabilization network LISPlist processing (computers) Li/Tclithium thionyl chloride LIVAlight-induced voltage alteration LIWGline implementation working group LJTLong-Junior Trilock LKKRlayered Kohn, Korringa, and Rostoker lllive load LLA1. launch loader adapter 2. lowest logical airfare LLClimited-life component LLCElimited-life component exchange LLD1. low level delivery 2. lower limit of detection LLElaunch location error LLGPTlow level general-process trash LLL1. low light level (optics) 2. low level logic (computers) LLMWlow level mixed waste LLNLLawrence Livermore National Laboratory LLRWlow level radioactive waste LLRWPALow Level Radioactive Waste Policy Act

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LLTLaboratory Leadership Team LLTBlong life thermal battery LLV-1Lockheed Launch Vehicle LLW1. low level waste (nuclear waste technology) 2. leaky Lamb wave lmlumen (luminous flux) LMlow melting LMCLockheed-Martin Corporation LMCSloop multiplexer communication system LMEATLine Managers ES&H Action Team LMF1. Laboratory Microfusion Facility 2. Large-Scale Melt Facility 3. local monitoring facility LMFBRliquid metal fast breeder reactor lm/ft2lumens per square foot lm/m2lumens per square meter LMMSland mobile missile system LMOSloop maintenance operations system LMR1. limited message retriever 2. liquid metal reactor lm-slumen second LMSCLockheed Missile and Space Company (Sunnyvale, CA) lm/Wlumens per watt lnlogarithm (natural) (see log) LNAlow noise amplifier LNGliquified natural gas

LNPloss of normal power LO1. local oscillator 2. low observable 3. locked open 4. limitation of obligations LOAleave of absence LOB1. line of business 2. launch operations building LOC1. limited operational capability 2. loss of communication 3. level of concern LOCAloss-of-coolant accident LOCAASlow-cost, anti-armor submunition LOCAPlow capacitance (cable) loc.cit.loco citato (in the place cited) LOCUSPlow-cost uncooled sensor prototype LOCVloss of condenser vacuum LODletter of determination LOElevel of effort LOFloss-of-flow (accident) LOFARlow frequency acquisition and ranging LOFTloss-of-fluid test loglogarithm (common); see ln LOGCAPlogistics and command assessment of projects long1. longitudinal 2. longitude LOOPloss of offsite power LORANlong-range navigation LOSline-of-sight

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LOTAloss of target accident LOTOlockout/tagout LOTSlightweight optical tracking system LOVletter of violation LOWlaunch on warning LOXliquid-oxygen explosive LP1. liquid propellant 2. linear programming LPCVDlow-pressure chemical vapor deposition LPEliquid-phase epitaxy LPFlow pass filter LPG1. liquified petroleum gas 2. liquid propellant gun LPI1. low probability of intercept 2. low pressure injection LPLIFlaser-photoanalysis, laser-induced fluorescence lpmline pairs per millimeter LPPPlow pressure pump pad LPRSlow pressure recirculation system LPRSXlow pressure recirculation system (heat) exchanger LPRlaboratory process reengineering LPSlaser plasma source LPSOLead Principal Secretarial Office (DOE) LPSSline protection switching system LPSWlow pressure service water

LPTline printer LQlimited quantity LrLawrencium (chemical symbol) LR1. letter requirement 2. light replica LRAlong-range aviation LRAMlong-range attack missile LRDlight replica decoy LRFlaser resonant fluorescence LRINFlong-range intermediate nuclear force LRIPlow rate initial product LRMDSlightweight radar mine detector system LRP1. long-range plan 2. lightweight retractable pole LRSPlong-range security plan (or program) LRUline replaceable unit (module) LS1. launch system 2. loaded salary 3. loop seal L/sliters per second (use ft3/min instead) LSA1. logistic support analysis 2. low specific activity LSBleast-significant bit (computers) LSC1. linear-shaped charge 2. Life Safety Code (NFPA 101) LSDleast-significant digit (computers) LSEliaison element LSGlaboratory support group

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LSIlarge-scale integrated (circuit) LSO1. laser safety officer 2. Lovelace senior options LSPLovelace Senior Plan LSTCLivermore Software Technology Corporation LSTS1. launch system test set 2. launch system test sequence LSWDlarge screen wall display LTlaser tracker LTAless than adequate LTClimited try count LTDlong-term disability LTElocal thermodynamic equilibrium LTGLaboratory Task Group LTGen.Lieutenant General LTHlethality and target hardening LTIlaunch test inert LTIVlaunch test inert vehicle LTPDlot tolerance percent defective LTPElaboratory test program evaluation LTRAlong term response action LTSFFlimited-term staff LTSPMElong-term savings plan for management employees LTSSPlong-term savings and security plan LTUlaboratory test unit

LTVLing-Temco-Vought LUAlaunch under attack lubleast upper bound LUGlocal user's group LUSTleaking underground storage tank luxthe SI unit of illumination, equal to 1 lumen per square meter LVCload verification code LVDTlinear variable displacement (or differential) transformer LVPSlow voltage power supply LVT1. linear velocity transducer 2. landing vehicle tracked LVTBlow voltage thermal battery LWC1. liquid water content (climatology) 2. lost workday case LWGlogistic working group LWIRlong wavelength infrared LWISlightweight instrumentation system LWRlight water reactor LWRPLivermore Water Reclamation Plant lxilluminance (use lux) LYlow yield

M

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µ-micro- (AIP still uses micron, which they list as µ. Many Sandia scientists also use micron in certain instances.) µAmicroampere µAhmicroampere hour µCmicrocoulomb µFmicrofarad µg/m3do not use µg/mcu µJmicrojoule µmmicrometer (formerly called micron; see µ- above) µsmicrosecond (do not use µsec) mmeter m- milli (a prefix indicating 10-3) M1. millions (Use with dollar sign: $14 M) 2. mole 3. molarity (chemistry) 4. mega (a prefix indicating 10°) 5. moment (magnitude) 6. molarity (chemistry) M- --mega (prefix indicating 106) mWmilliohm MWmegohm mAmilliampere MA1. mega ampere 2. management associate (or aide) 3. military application 4. maintenance M&Amaintenance and assembly (Army) M.A.Master of Arts MAA1. mission area analysis 2. material access area

M.AACSMELCOR Accident Consequence Code System MAAGMilitary Assistance Advisory Group MABMarine amphibious brigade MABEmega ampere beam experiment (accelerator) MAC1. material accountability computer 2. Military Airlift Command 3. modified auxiliary closure MACCSMELCOR accident consequence code system MACS1. multiple-application coded switch 2. multiple-application computer system MACYMilitary Assistance Command, Vietnam (US) MAD1. maintenance, assembly, and disassembly (atomic weapons) 2. magnetic anomaly detection MADDSmachine-aided design definition system (computers) MADMmedium atomic demolition munition MADTmicroalloy diffused transistor MAF1. Marine Amphibious Force 2. moisture ash free magmagnetic MAGICmanual-aided gaming of integrated combat (an electromagnetic particle-in-cell code) MAGIDmagnetic intrusion detector MAGLEVmagnetic levitation (sometimes written as mag-lev) MAGLOCmagnetic logic computer

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MAGTFMarine Air Ground Task Force mAhmilliampere hour MAID1. monitor adapter isolation device 2. magnetic anti-intrusion detector MAITmatrix analysis of the inside threat MAJCOMMajor Command MANManagement Assurance Notebook MANARmodular adaptable network for alarm reporting MANOPManganese Nodule Program MANOSSpanish word for hands (Program is designed to help Spanish speakers in science and engineering.) See HOMOT-a similar program for African Americans. Dream Catcher is the American Indian program. MANTECHManufacturing Technology MAP1. macroassembly program (computers) 2. mass analysis of particulates 3. Mitigation Action Plan MAPS1. modular azimuth positioning system 2. multiple automated printing system MAR1. major article release 2. major assembly release MARGE/SLUMPfuel slumping (computers) MARRSmobile autonomous robotics research system MARSmodule autonomous robotics system MARV1. Miniature Autonomous Robotic Vehicle 2. maneuverable reentry vehicle MAS1. material accountability system 2. multi-application surety 3. mine safety appliances

MASC1. manned automated security console 2. marine automated security console MASERmicrowave amplification by stimulated emission of radiation MASPmobile automatic scanning photometer MASSmodular advance search system MaSTmaneuvering systems technology (or test) (sometimes written as MST) MAST1. multiple application (sometimes seen as multi-application) surety technology 2. multi-axis seam tracking MatResLibmaterial response library MATVmaster antenna television (system) MAUSmobile automated ultrasonic scanner MAVISmodeling and analysis of valve interactions (computers) MAWmedium assault weapon MAWPmaximum allowable working pressure maxmaximum MAXHmaximum homogeneity mbmillibar (sometimes written mbar) Mbmegabit MBmachine basin MB or Mbytemegabyte MBA1. material balance accounting (or area) 2. management, budget, and accounting 3. main battle area 4. Masters of Business Administration MBBmodular building block

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MBCmeteor burst communication MBEmolecular beam epitaxy MB/EEBrazilian designator for a ballistic missile series MBFRmutual and balanced force reduction MBNMarine battalion MBNQAMalcolm Baldrige National Quality Award MBOmanagement by objective MBPSmegabits per second (use Mb/s) Mb/smegabits per second MBSmodified bremsstrahlung MBWAmanaging by walking around Mbytemegabyte (see MB) mCmicrocoulomb Mcmegacycle (obsolete; use MHz) MC1. major component 2. manual chapter 3. military characteristics 4. management controls MCA1. multichannel analyzer 2. maximum credible accident 3. material condition and aging MC&Amaterial control and accountability (or accounting) MCAAPMcAlester Army Ammunition Plant MCC1. missile combat crew 2. Micro-electronics and Computer Corporation MCCS1. multiple-code coded switch 2. mobile command and control system

MCCSSmultiple-code coded security switch MCD1. Mail Channel Directory 2. monitor control and display M/CDmental (health) chemical dependency MCFmagnetic confinement fusion mCimillicurie MCimegacurie MCL1. maximum containment level 2. maximum contaminant level 3. maximum concentration limit MCLGmaximum contaminant level goal MCM1. mine countermeasures 2. main control module 3. mission control module 4. manual control module 5. multichip module MCP1. microchannel plate 2. medical care plan 3. monolithic colliding pulse 4. mission check (word) processor 5. missile consent panel MCRmedical clearance for respiratory (protection) MCS1. maintenance control system 2. maneuver control system 3. master control system MCTLmilitarily critical technologies list MCUmultiplexer control units (computers) mdmedian mDmillidarcy (geology) Mdmendelevium (chemical symbol; sometimes written as Mv) M&Dmaintenance and development MDA1. methylene dyaniline 2. minimum detectable activity (or amount)

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MDAC/OECMcDonnell Douglas Astronautics Company/Opto Electronics Center MDDMission Data Directory MDEmanufacturing development engineering (program) MDF1. mild detonating fuze 2. main distribution frame MDImethylene disphenyl isocyanate MDL1. minimum detectable level 2. Microelectronics Development Laboratory MDMmicrominiature D-shape metal MDMSCMcDonnell Douglas Missile Systems Company MDRmandatory dry run MDTDminimum detectable temperature difference MDTIMcDonnell Douglas Technologies, Inc. MDUmunitions dummy unit Memass of electrons MEAFSAMiddle East, Southern Asia and Africa (South of the Sahara) measmeasure; measurement; measurable MEASIMmeasurement simulation (computers) MEBESmanufacturing electron beam exposure system MECMicrosystems Engineering Corporation

MEIDS1. militarized electronic information delivery system 2. miniaturized electronic information delivery system MEKmethylethylketone MEL1. material on external loan 2. monitoring exposure level (or logic) 3. master equipment list MELCORcomputer code for the US NRC MELIOSmini-eye-safe laser infrared observation set MELTmultiple-channel analysis of top accidents (computers) MEMSMicroElectroMechanical Systems MEPmobile electric power MEPSmultimedia environmental pollutant (assessment) system MERmaterial evaluation reactor MERADCOMMobility Equipment Research and Development Command (Fort Belvoir, VA) MERITmutual efforts to reduce industrial toxins (EPA) MESmanagement evaluation sheet MESA1. Microsystems and Engineering Sciences Applications 2. Eulerian hydrocode development at LANL (see CTH) 3. math, engineering, and science achievement MESFETmetal electrode semiconductor field-effect transistor MESH-HAZmedical, environment, safety, and health hazards MESH-HPmedical, environment, safety, and health/health physics

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METMCCS encryption translator METADEXmetals (abstracts and alloys) index METCMorgantown Energy Technology Center meVmillielectron volt MeVmegaelectron volt MEWmicrowave early warning mf or MFmedium frequency mFmicrofarad MFmain fuel MFCmultifuel combustor MFD1. multi-functional display 2. military first destinations MFEmagnetic fusion energy MFImagnetic flashover inhibition MFISmosaic filter image sensor MFLmaximum foreseeable loss MFLOPSmillion floating point operations per second (computers) MFMmagnetic force microscopy mfpmean free path MFRFSmanufacturing facilities request for support MFSmicrowave fence sensor MFWmain feedwater MFWCSmain feedwater and condensate system

mgmilligram MGmotor generator MGAmonochrome graphic adapter mgallonmillion gallons MGDmillion gallons per day MGHmass, gravity, height MGMmobile-guided missile MGS1. missile guidance set 2. mobile ground system mHmillihenry MHBmedium-height burst MH/CDmental health/chemical dependency mhdmagnetohydrodynamic MHFmassive hydraulic fracturing MHTGRmodular high-temperature gas reactor mHzmillihertz MHzmegahertz (use instead of megacycle) mimile (statute) MI1. military intelligence 2. moments of inertia M&IMaintenance and Inspection (Air Force Facility) MIACmaintenance information and control MIBmaster interconnect board MICDmechanical interface control drawing MICOMMissile Command (Army)

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MICSSmobile integrated C3 and security system MIDmaterial identification document MIDAS1. management information and data access system 2. mobile intrusion detection and assessment system 3. mobile instrumentation and data acquisition system MIDEPmine detection energetic photons MIDSminiaturized intrusion detection system MIFASSMarine-integrated fire and air support system mi/h or mphmiles per hour MIIPmanagement integration and implementation program (project or plan) MIITmaterials interface interactions test MIL1. military 2. military (standard) (DoD) MILCONmilitary construction MILES1. magnetic intrusion line sensor 2. multiple-integrated laser engagement system milliremsee mrem MILNETmilitary network MILSPECmilitary specification MILSTARmilitary strategic/tactical and relay MILVANa standard military freight container MIMDmultiple instruction, multiple data MIMSmodular integrated monitoring system

min1. minute 2. minimum MINIMAGIDminiature magnetic intrusion detector MINISIDminiaturized seismic intrusion detector MinNetminimization network (waste) MINTminiature instrumental nosetip test MIPmaterial in process (formerly MUF: material unaccounted for) MIPRmilitary interdepartmental procurement request MIPSMIVS image processing system MIRmanaging interpersonal relationships MIRAmicrowave infrared alarm MIREDmicroreciprocal degree MIRSSmobile individual resource security system MIRVmultiple, independently (targetable) reentry vehicle MIRVALmirror evaluation (computer program for heliostats) MIS1. metal-insulator semiconductor 2. management information services (or system) miscmiscellaneous MISERminisensor relay (system) MISR1. modular industrial solar retrofit 2. multi-angle imaging spectroradiometer MISSmodular intelligent sensor system MITMassachusetts Institute of Technology

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MITEmagnetically insulated transmission experiment MITL1. man-in-the-loop 2. magnetically insulated transmission line MITMSmilitary/industry technical manual specification MIUmissile interface unit MIVSmodular integrated video system mJmillijoule Mk or MKMark, a bomb designation; it is followed by a number: Mk 5 (Army uses: MK5) Mkgmegakilogram (use Gg instead) MKS or mksmeter-kilogram-second mL1. milliliter (also ml, but mL is preferred) 2. Millilambert MLmaximum likelihood MLC1. Military Liaison Committee 2. monitor logic circuitry MLRSmultiple-launch rocket system (Army) MLS1. member of the laboratory staff 2. multi-level secure MLS/MISmember of the laboratory staff who has experience or educational background in management information systems MLSTmember of laboratory staff trainee MLT1. munitions lift (or load) trailer 2. median lethal time mmmillimeter mMmillimole

MM1. Minuteman (missile) 2. memory module 3. meets most MMA1. materials measurement and accounting MMADmass median aerodynamic diameter MMDCmaster message display console mmfmagnetomotive force mmHgmillimeter of mercury, (also milliHg) MMIman-machine interface MMICmonolithic microwave integrated circuit mmolmillimole MMPmaintenance management program MMRBMmobile medium-range ballistic missile MMS1. maintenance management system 2. mission management system 3. munitions maintenance squadron mmumilli-mass unit mmWmillimeter wave Mnmanganese (chemical symbol) MNCRmaterial non-conformance report MNOSmetal-nitride-oxide semiconductor MNRmononitroresorcinate momonth Momolybdenum (chemical symbol) MOmove order M&Omanagement and operations (or managing and operating)

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MOAmemorandum of agreement MOACManagement Oversite Advisory Committee MOASmissile ordnance arm switch MOBmain operating base MoC/MOC/M of Cmaintenance of capability MOC1. material operation computer 2. margin of control MOCVDmetal-organic chemical vapor deposition mod1. modification 2. model MODMinistry of Defense Mod/Altmodification/alteration (sometimes written mod/alt) ModComptrade name for Modular Computer Systems, Inc. MODEMmodulator demodulator (computers) MODFETmodulation-doped field-effect transistor MODILManufacturing Operations Develop-ment and Integration Laboratory MOFFFmixed-oxide fuel fabrication facility Mohmmegaohm MOI1. moment of inertia 2. magneto-optic (eddy current) imager molmole (often spelled out, but can be M) mol %mole percent mol wtmolecular weight

MOLINKMoscow to Washington (DC) direct line communication link MOMmethod of moments MONALMobile Nondestructive Assay Laboratory MOPSmillion operations per second MORTmanagement oversight and risk tree (accident investigations) MOS1. metal-oxide semiconductor 2. metal-oxide silicon 3. military occupational specialty 4. maintenance, out of service Mosaichigh-quality user interface to the web MOSFETmetal-oxide-semiconductor, field-effect transistor MOTIONanalysis of head motion due to HCDA loads (computers) MOUmemorandum of understanding MoundMonsanto Research Corporation, Mound Facility MOV1. metal oxide varistor 2. motor operated vehicle MOVPEmetal organic vapor-phase epitaxy MOXmixed-oxide mp1. melting point 2. mean (effective) pressure 3. Multipulse MP1. Military Police 2. maintenance procedure 3. massively parallel 4. message processor MPamegapascal MPACMicroelectronics and Photonics Applications Center MPCmaximum permissible concentration

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MPCCmultifunction peripheral controller chip MPDmaximum permissible dose MPEmaximum permissible exposure (radiation) MPG1. midplate, midgyre 2. managing professional growth mph or mi/hmiles per hour MPImultiphoton ionization MPLmaximum possible loss MPLSmultiphenomena line sensor MPP1. massively parallel processor 2. memory phrase pairs MPRmaterial-penetrating radar MPRSAMarine Protection, Research, and Sanctuaries Act (1972) MPU1. microprocessor unit 2. Marx pulser unit MQmanagement qualifications MQRCMicroelectronics Quality/ Reliability Center MQWmultiple quantum well mr or mradmilliradian mRmilliroentgen MR1. missile range 2. material requisition 3. military regions 4. mortality range MRA1. monetary recognition award 2. missile relay assembly 3. military research associate mrad or mrmilliradian

Mradmegarad MRBMmedium-range ballistic missile MRCmaintenance requirement card MRDManagement Review Division (DOE) mremmillirem or milli-rem MRGmultiple-range gates MRImagnetic resonance imaging MRLmulti-purpose rotary launchers MRO1. memory read out 2. maintenance, repair, and operating 3. medical review officer MRRminimum residual radioactivity MRS1. material requisition schedule 2. material requirement schedule 3. microwave ranging system 4. Materials Research Society 5. monitored retrievable storage MRSTmanagement restructure study team MRTminimum resolvable temperature MRTDminimum resolvable temperature difference MRVmaneuvering reentry vehicle MRVTmultirate voice terminal msmillisecond (do not use msec) m/smeters per second mSmillisiemens MS1. mass spectrometer (or spectrometry) 2. monitor and support 3. motion sensor 4. military service 5. medical services

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MSA1. mine safety appliances 2. major system acquisition MSAD1. mechanical safe and arm detonator 2. mechanical safe arming device MSBmost significant bit (computers) MSBRmolten-salt breeder reactor MSCMajor Subordinate Command (NATO) MSCAmulti-site cooperative agreement MSCF1. Master Surveillance and Control Facility 2. thousand standard cubic feet MSCUmissile secure cryptographic unit MSDmost significant digit (computers) MSDSmaterial safety data sheet MSE1. multiple subscriber equipment 2. Mean-square error MSEEmolten-salt electric experiment MSGMarine Security Guard MSHAMine Safety and Health Administration MSI1. medium-scale integrated (circuit) 2. multiple sensor interface 3. multi-sensor imaging msl or MSLmean sea level MSLBmain steam-line break MSMJmechanically stacked, multijunction MSPmarine sediment penetrometer MSR1. molten-salt reactor 2. maintenance service request 3. modular surveillance radar

MSRCmulticrystalline silicon research consortium MSRVmedium single (targeted) reentry vehicle MSS1. mass storage system 2. multi-spectral scanner 3. mission support system MSSAmaster safeguards and security agreement MSSTFmidtemperature solar systems test facility MST1. medium-scale technology 2. maneuvering systems test (or technology) (see MaST) MSTAmaterials sample test apparatus MSTCMaquila Sandia Technology Consortium MSTRSminiature spacecraft threat reporting system MSXmidcourse sensors experiment mtmetric ton Mtmegaton (see kt) MT1. manufacturing technology 2. measured time MTAmulti-threat analyzer MTACMachine Tool Access Center MTBCFmean time between critical failure MTBFmean time between failures MTBOMFmean time between operational mission failures MTCMetal Trades Council (material handling and moving)

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MTCCModular Tactical Communications Center MTCRMissile Technology Control Regime MTEmeasuring and test equipment MTFmodulation transfer function MTFPPmodular tactical force protection package mtgmeeting MTHMmetric tons heavy metal MTI1. Mechanical Technology, Inc. 2. multispectral thermal imager 3. moving target indicator 4. maintenance team inspection MTLmaster tester list MTOmaterial transfer order mTorrmillitorr MTPMmean time to perform (preventive) maintenance MTRmean time to restore MTSmember of the technical staff MTSAAmultidiscipline technical safety assurance appraisal MTTFmean time to failure MTTFFmean time to first failure MTTRmean time to repair mtUmetric tons uranium MU1. monitoring unit 2. multiple unit MUFmaterial unaccounted for (obsolete; now material in process: MIP)

MULEmodular universal laser equipment MUMSmunitions maintenance squadron MUNSSmunitions support squadron MUSEmultidimensional user-oriented synthetic environment MUX1. multiplexing equipment 2. multiplexer mVmillivolt Mvmendelevium (chemical symbol) (Md is preferred) MVmegavolt MVPDmedian volume pore diameter MVSmultiple virtual storage mWmilliwatt MW1. megawatt (electrical) 2. microwave 3. mixed waster 4. missile warning 5. mine warfare MWdmegawatt-day MWDSmissile warning display system MWemegawatt (electrical); use MW MWLIDmixed-waste landfill integrated demonstration MWMFmixed waste management facility MWOmodification (or maintenance) work order MWRmorale, welfare, and recreation MWRTSmillimeter wave radio telephone system MWSAManzano weapons storage area

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MWthmegawatt, thermal MWXMultiwell Experiment (DOE-sponsored Field Laboratory) Mxmaxwell (a unit of magnetic flux) MXBa commercial name for modified phenolic, glass-fabric filled ammonia MX1. Peacekeeper ICBM 2. missile MYman-year myamyriare (10,000 acres) myLmyrialiter mymmyriameter M/Zmass-to-charge ratio MZIMach-Zehnder interferometry

N n-nano- (a prefix indicating 10-9) nneutron N1. newton (unit of force) 2. normal (chemistry) 3. nose nAnanoampere NA1. not available 2. not applicable 3. numerical aperture 4. network adapter NAAMMNational Association of Architectural Metal Manufacturing NAAQSnational ambient air quality standards NAARPnational aging aircraft research program

NABNational Association of Broadcasters NACENational Association of Corrosion Engineers NACFENational Association of Certified Fraud Examiners NACOANational Advisory Committee on Ocean and Atmosphere NADnuclear accident dosimeter NADCNaval Air Development Center NAEPNational Assessment of Educational Progress NAFEMSNational Agency for Finite Element Methods and Standards NAHAMMERSodium (Na) Fluid-HAMMER Analysis (computers) NALNational Aerospace Laboratory (Japanese) NALAPSodium (Na) Version of ReLAP (computers) NANDnot-AND (computer logic) NAMNational Atomic Museum NANSNuclear Agency, Nuclear Security NAP1. N AS aperture package 2. nuclear artillery projectile NAPAPNational Acid Precipitation Assessment Program NAPSACNaval Atomic Planning, Support, and Capabilities NARnuisance alarm rate NARANational Archives and Records Administration

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NARLNaval Arctic Research Laboratory NARMnaturally (occurring or) accelerator-produced radioactive materials NARSNational Archives Records Service NAS1. NDS antenna system 2. Netview Access Services 3. nuclear assembly system 4. Naval Air Station 5. National Academy of Sciences NASANational Aeronautics and Space Administration NASPnuclear ammunition supply point NATONorth Atlantic Treaty Organization NATRANSodium (Na) Transient Analysis (computers) NAV1. navigation 2. net asset value NAVAIRNaval Air Systems Command NAVELEXNavy Electronics Systems Command NAVEODTECHCENNaval Explosive Ordnance Disposal Technology Center NAVFORVNaval Forces, Vietnam NAVMATNaval Material NAVSEA INSTNaval Sea Institute NAVSWCNaval Surface Weapons Center NAWCNaval Air Weapons (or Warfare) Center nBnanobarn NBC1. nuclear, biological, chemical 2. non-base compensation

NBBPVINational Board of Boiler and Pressure Vessel Inspectors NBDSnuclear-burst detection system NBLNew Brunswick Laboratory NC1. normally closed 2. numerically controlled 3. nitrocellulose 4. noise criterion 5. no contract NC2nuclear command and control NCA1. National Contingency Act 2. National Command Authority NCAICMNational Center for Advanced Information Components Manufacturing NCAMNational Center for Advanced Materials NCARnonconformance action report (see NCR) NCAWneutralized current and waste NCBNuclear Contingency Branch NCCNetwork Control Center NCCLSNational Committee for Clinical Laboratory Standards NCEMNational Center for Electron Microscopy NCFno containment failure nCinanocurie (10-9 curies) NCMnonconforming material NCMANational Contract Management Association NCMSNational Center for Manufacturing Sciences NCOnoncommissioned officer

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NCOSENational Council on Systems Engineering NCP1. National Contingency Plan 2. National (Oil and Hazardous Substances) Contingency Plan NcPTDnear-field physical theory of diffraction (code) NCR1. nonconformance report (see NCAR) 2. no clearance required NCRPNational Council on Radiation Protection (and Measurement) NCRWneutralized cladding removal waste NCS1. neutron control 2. network computing system 3. national communications system NC2SGNuclear Command and Control Steering Group NCSSNaval Coastal Systems Station NCTTANational Competitiveness Technology Transfer Act NCURENational Center for Ultra-Reliability Engineering ND1. not determined 2. no date 3. neutral density NDBnuclear depth bomb NDEnondestructive evaluation NDEWnuclear-driven (or directed) energy weapon NDI1. nondevelopment item 2. nondestructive inspection NDAnon-disclosure agreement NDPnuclear detonation pathway

NDPCNational Disclosure Policy Committee NDR1. NUDET detection report 2. Nuclear Defense Research (Corporation) NDROnondestructive readout (computers) NDSNUDET detection system (or nuclear detection system) ND/SBnuclear depth/strike bomb NDTnondestructive test (or testing) NDTWGNevada Test Site Development and Transport Working Group NEnuclear energy NEA1. Nuclear Energy Agency 2. nuclear explosive area (or assembly) NEACPNational Emergency Airborne Command Post NECNational Electrical Code NECOSHANational Electrical Code OSHA NEDSnonviolent explosive destruct system NEEnoise equivalent emissivity negnegative NEGnet energy gain NEINuclear Energy Institute NELAnuclear explosive-like assembly NELIACNavy Electronics Laboratory International ALGOL Compilers (computers) NELMNaval Forces Eastern Atlantic and Mediterranean NEMANational Electrical Manufacturers Association

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NEODTCNaval Explosive Ordnance Disposal Technology Center NEP1. NAS electronics package 2. noise equivalent power 3. nuclear explosive package NEPANational Environment Policy Act NEPBNEST Executive Planning Board NERnetwork equipment rack NERPNational Environmental Research Park NERVAnuclear engine for rocket vehicles application NES1. nuclear explosive safety 2. National Energy Strategy NESC1. National Electric Safety Code 2. National Energy Software Center NESDNuclear Explosive Safety Division (DOE) NESECNaval Electronics Systems Engineering Center NESHAPnational emission standards for hazardous air pollutants NESSnuclear explosive safety study NESSGnuclear explosives safety study group NESTnuclear emergency search team NET1. new equipment training 2. noise equivalent temperature NETDnoise equivalent temperature difference NETOGnuclear explosive tester oversight group

NETSNational Emergency Telecommunications System nfnoise factor nFnanofarad NFno foreign (distribution) NFAno further action NFARSNORAD forward automated reporting system NFEnon-Federal entities NFHnonflammable hydraulic (fluid) NFPA1. National Fire Protection Act 2. National Fluid Power Association NFPQTnuclear facilities personal qualification and training NFS1. nuclear fuel services 2. network file system (computers) NG1. neutron generator 2. nitroglycerine NGBNational Guard Bureau n/gsneutron per gram-second NGSNUDET ground station nHnanohenry NHNike Hercules NHLnext higher level NHPANational Historic Preservation Act Ninickel (chemical symbol) NIAMNatural (Language) Information Analysis Methodology NIBANational Indian Business Association

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Ni-Cad or nicadnickel-cadmium Ni-Cr-Pnickel-chromium-phosphorous NIDMNMCC information for decision makers NIDS1. NMCS information display system 2. NATO intrusion detection system NIFNational Ignition Facility NIFFTEnoncooperative, identify friend or foe technology evaluation NIHNational Institute of Health NIHLnoise-induced hearing loss NIINational Information Infrastructure NIISNational Information Infrastructure Superhighway NIITNational Information Infrastructure Testbed NIJNational Institute of Justice NIMnuclear incident monitor NIOSHNational Institute of Occupational Safety and Health NIPDENational Initiative for Product Data Exchange NISNew Independent States (former Soviet Republics) NISCNaval Intelligence Support Center NISDNNATO integrated services digital network NISPNational Industrial Security Program NISTNational Institute of Standards and Technology (or Testing)

NITFnational imagery transmission format NKEWnuclear kinetic energy weapon NLONaval Liaison Organization NLRANational Labor Relations Act NLRBNational Labor Relations Board NLTnot later than NLUnormal latch up NLWnonlethal weapon NMdoes not meet required performance nmnanometer N/m2newton per square meter NûMnewton meter NMABNational Materials Advisory Board NMASnuclear material accountability system NMCNational Microelectronics Center (SNL) NMCCNational Military Command Center NMCINational Military Intelligence Center NMCSNational Military Command System NMED1. New Mexico Environmental Department 2. New Mexico Educational Development NMEINew Mexico Environmental Institute NMERI1. New Mexico Energy Research Institute 2. New Mexico Engineering Research Institute NMFACNew Mexico (site-wide) facilities (and maintenance)

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NMFTnew materiel flight test NMHRCNew Mexico Human Rights Commission nminautical mile NMINuclear Materials, Inc. NMIS1. nuclear material inspection and storage 2. nuclear material identification system NMLTnew materiel laboratory test NM MESANew Mexico Mathematics Engineering Science Achievement NMMSnuclear material management system NMMSSnuclear materials management and safeguards system NMOSnitrous metal-oxide semiconductor NMPnuclear materials production NMRnuclear magnetic resonance NMRDINew Mexico Research and Develop-ment Institute NMRONuclear Monitoring Research Office NMSASNew Mexico (site-wide) security and safeguards NMSEPnew material and stockpile evaluation plan NMSPENew Mexico Society of Professional Engineers NMSSNuclear Material Safeguards and Security NMSTnew material system testing NMSUNew Mexico State University

NMTPNational Mechanic Tool Partnership NMUSTRNew Mexico Underground Storage Tank Regulations NMVONew Mexico Volunteers for the Outdoors NMWQCCRNew Mexico Water Quality Control Commission Regulations NNAPSnight navigation and pilot system NNC1. National Nuclear Center (Agency responsible for the nuclear facilities of the Republic of Kazakhstan) 2. Non-Nuclear Configuration (Complex) NNFNational Nanofabrication Facility NNKnonnuclear kill NNSANational Nuclear Security Administration NNTnonnuclear testing NNTRPNational Nuclear Test Readiness Program NNWSINevada Nuclear Waste Storage Investigation Nonobelium (chemical symbol) NO1. normally open 2. nitric oxide NOAnotice of availability NOAANational Oceanographic and Atmospheric Administration NOAELnon-observed adverse effect level NOAMnuclear ordnance Air Force materiel NOCMnuclear ordnance commodity management (or manager)

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NOCSIMnitrate-to-oxide conversion simulation (computer code) NODnotice of deficiency NOFNORAD Offutt NOHSCPNational Oil and Hazardous Substances Contingency Plan NOInotice of intent NOIWONNational operations and intelligence watch officer's network nomnominal NONnotice of noncompliance NONELnonelectric NO OPno operation (computers) NOCMnuclear ordnance commodity management (or manager) NOP1. nuclear operations policy 2. Nuclear Ordnance Platoon 3. normal operating procedure NORnot-OR (computer logic) NORADNorth American Air Defense (Command) NORCnuclear ordnance record card NORDANaval Ocean Research and Development Activity NORESSNorweigan Regional Seismic Station NORMnaturally occurring radioactive material NORSOCNevada Occurrence Reporting System Operations Office NORTHAGNorthern Army Group (NATO)

NOS1. network operating system 2. NATO Office of Security 3. Naval Ocean Systems 4. not otherwise specified NOSCNaval Ocean Systems Center NOSOnuclear ordnance supply officer NOSSnuclear ordnance shipping schedule NOVnotice of violation NOWRnuclear ordnance war reserve Np1. neptunium (chemical symbol) 2. neper (logarithmic ratio) NPnonproliferation NPARNuclear Plant Aging Research (Program) NPBneutral particle beam NPBWneutral-particle-beam weapon NPDESnational pollution (or pollutant) discharge elimination system NPDWANational Primary Drinking Water Act NPESnuclear planning and execution system NPFnuclear permission to fire NPGnuclear planning group NPLNational Priorities List NPNnegative-positive-negative NPP1. nuclear plot production 2. nuclear pilot production 3. nuclear power plants NPR1. new production reactor 2. Nuclear Posture Review

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NPRDSnuclear plan reliability data system NPRMNotice of Proposed Rulemaking NPS1. nuclear power system 2. nuclear power supplies NPSSNuclear and Plasma Sciences Society NPTNonproliferation Treaty; also, Treaty on Nonproliferation of Nuclear Weapons: TNNW NPTFnuclear permission to fire NQAANuclear Quality Assurance Agency NQMNational Quality Month NRC1. Nuclear Regulatory Commission 2. Newport Research Corporation 3. National Research Council 4. National Response Center 5. non-reusable container NRDAnatural resource damage assessment NRDCNatural Resources Defense Council NRELNational Renewable Energy Laboratory NRFNaval Reactors Facility NRHCNational Register of Historic Places NRLNaval Research Laboratory NRR1. Nuclear Reactor Regulation 2. noise of reduction rating NRRSInonregular recurrent security inspector NRSNDS receiver subsystem NRSANorwegian regional seismic array NRTnational response team NRVnosetip recovery vehicle (parachutes)

NRZnon-return to zero nsnanosecond (do not use nsec) NS1. nuclear safety (or security) 2. nonsurvivable 3. nuclear systems NSA1. National Security Agency 2. Nuclear Security Agency NSAC1. National Security Activities Committee 2. National Security Advisory Committee 3. Nuclear Safety Analysis Center NSAFEnuclear safety (evaluation) NSC1. National Security Council 2. National Space Council 3. National Safety Council NSDDNational Security Decision Directive NSF1. net square feet 2. National Science Foundation 3. National Strike Force NSI1. national security information 2. nuclear surety inspection NSICNuclear Safety Information Center NSL1. National Storage Laboratory 2. nuclear surety link NSLSNational Synchrotron Light Source NSMnuclear strike message NSNFnonstrategic nuclear force NSOnetwork security officer NSPENational Society of Professional Engineers NSPINational Society for Performance and Instruction NSPSnew source performance standards

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NSRDCNaval Ship Research and Development Center NSS1. national stockpile site 2. National Seismic Station 3. nuclear safeguards and security NSSSnuclear steam supply system NSTEPNational Small-business Technology Exchange Program NSTTFNational Solar Thermal Test Facility NSUnegotiations support unit NSWCNaval Systems Weapons Center NSWGnuclear safety working group NSWSESNaval Ships Weapons Systems Engineering Station NSZnational sacrifice zone (Rocky Flats) ntnit (luminance) NTAnitiloriacetic acid ntcnegative temperature coefficient NTCNational Training Center (Fort Irwin, CA) NTDSNaval tactical data system NTEnaval test and evaluation NTInational technology initiative NTIKnontechnical instrumentation kit NTISnational technical information service (or system) NTMnational technical means NTNCWSnon-transient, non- community water system

ntpnormal temperature and pressure NTPnational transuranic (waste) program NTPINavy Technical Proficiency Inspection NTRBNuclear Technology Reference Book NTSNevada Test Site NTSBNational Transportation Safety Board NTSC1. National Television Standards (or System) Committee 2. National Transportation Systems Center NTSONevada Test Site Office NTU1. nephelometric turbidity units 2. National Technological University NTUANavajo Tribal Utility Authority (Fort Defiance, Arizona) NUCnuclear NUCSLUnuclear station logic unit NUCWAnuclear weapons accounting (system) NUDETnuclear detonation (and detection) NUFACNuclear Facilities (Resource Center) NUMARCNuclear Management Resources Council NuPacNuclear Packaging, Inc. NUREGA number issued for an NRC document NUSCNaval Underwater Systems Center NVNevada Operations Office (DOE) NVANorth Vietnamese Army

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NVD1. nonviolent disablement 2. night-vision device NVEOLNight-Vision and ElectroOptical Laboratory NVInew ventures initiative nWnanowatt NWnuclear weapon NWAInuclear weapons acceptance inspection NWC1. Naval Weapons Center 2. Nuclear Weapons Complex 3. Nuclear Weapons Council NWCSSCNuclear Weapons Council Standing and Safety Committee NWCTnuclear weapons critical technologies NWC/WSCNuclear Weapons Council/Weapons Safety Committee NWD1. nuclear weapon data 2. nuclear weapon design NWDGnuclear weapon development guidance NWEFNaval Weapons Evaluation Facility (Kirtland Air Force Base) NWERnuclear weapon effects research NWETnuclear weapon effects test NWIUnuclear weapon interface unit NWLEnuclear weapons liaison element NWMnuclear weapon (or warhead) management NWMPnuclear waste management program NWPnuclear weapon production

NWPANuclear Waste Policy Act NWRGNuclear Weapons Requirements Working Group NWRPnuclear weapons release procedures NWRS1. nuclear weapon response system 2. nuclear weapon requirement study NWRTnuclear waste repository technology NWSBNuclear Warfare Status Branch NWSMNuclear Weapons Stockpile Memorandum NWSS1. nuclear weapon subsystem 2. nuclear weapon system safety NWSSGnuclear weapon systems safety group NWSSTGnuclear weapon subsystem test group NWSSTPnuclear weapon subsystem test plan NWTInuclear weapons technical inspection NWTSnuclear waste terminal storage NWTSHEGnuclear weapon transportation safety hazard evaluation group

O Ωohm Ooxygen (chemical symbol) OAoffice automation OAAoffice administrative assistant

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OACOffice of Arms Control OACNPOffice of Arms Control and Non-Proliferation (Systems) OAD1. ordnance available date 2. operational availability date OADRoriginating agencys determination (is) required OALDoff-axis laser detection OAPOptical Aging Products (an optical measuring system) OARoperation assessment and readiness OAS1. Office Automation Subcommittee 2. offensive avionics system OASDC3IOffice of the Assistant Secretary of Defense Communications, Command, Control, and Intelligence OASPLoverall sound pressure level OAUOrigin of African Unity OAWGoffice automation working group (obsolete; now laboratory information network: LINK) OBAoperating basis accident OBDon-base disposal OBESOffice of Basic Energy Sciences OB/ODopen burning/open detonation obsobserved OC1. open circle 2. outside circumference 3. outer chuck 4. originator controlled OCAWoil, chemical, and atomic workers OCBoil circuit breaker

OCCOffice of Chief Counsel (DOE) OCEoperations control element (or equipment) OCIorganizational conflicts of interest OCMoperational change memo OCNorganization change notice OCONUSoutside contiguous United States OCR1. operational change report 2. optical character recognition OCRWMOffice of Civilian Radioactive Waste Management OCS1. outer continental shelf 2. on-scene commander OCSAorder compliance self-assessment OCSAPorder compliance self-assessment program OCTquality coordinator team OCV1. overcharged voltage 2. outer containment vessel OD1. optical density 2. outside diameter 3. Office of Declassification ODCozone-depleting chemical (or compound) ODEordinary differential equation ODESoperational deployment experiment simulator ODFODES development flight ODSozone-depleting substances ODTXone-dimensional time to explosion

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Oeoersted (do not use this unit of magnetic field flux) OE1. optical engineering 2. order expert 3. optoelectronics OEAOffice of External Affairs (DOE) OECOptoelectronics Center OECDOffice for Economic Cooperation and Development (nuclear-related scientific and technical software) OEMoriginal equipment manufacturer OEMToperational emergency management team OEPOOffice of Emergency Plans and Operations OERoperating experience report OESHOffice of Environment, Safety, and Health (DOE/AL) OESTOffice of Energy, Science, and Technology (DOE) OEToperational employment test OFAother federal agencies OFBoutput feedback OFCOrganizational Facility Coordinator OFCCPOffice of Federal Contract Compliance Program OFFEOffice of Federal Facilities Enforcement OFPoperational flight program OFRoffice furniture request OFSoperational flight software

OGSOverseas Ground Station OHouter housing OHEoccupational health examiner OHEGorganization and human effectiveness group OHLover high limit OHMTADSoil and hazardous material technical assistance data system OIoperating (or office) instruction O&Ioperation and inspection OIDAOptoelectronics Industry Development Association OIDToperator-interactive display terminal OIEOffice of Inspection and Enforcement OIG1. operations interface group 2. Office of the Inspector General OISordnance initiation set OISAOffice of International Security Affairs OITOffice of Industrial Technologies OJCSOrganization of the Joint Chiefs of Staff OJTon-the-job training OLoperating location (or limit) OLEobject linking and embedding OMoccurrence management O&Moperation and maintenance OMA1. Office of Military Application (DOE) 2. Office of Management and Administration (DOE)

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OMBOffice of Management and Budget OMGOperational Maneuver Group (Soviet) OMIOffice of Medical Investigator ONDPOffice of National Defense Programs (DOE) ONOPoff-normal operating procedure ONPGoperations nuclear planning group ONROffice of Naval Research ONTOffice of Naval Technology ONWIOffice of Nuclear Waste Isolation (Battelle Memorial Institute) OOHout of hours OOLout of limit OOPSobject-oriented programs symbols (computers) OOSOffice of Operational Safety (DOE HQ) OOSSoverseas operational storage site OPoperating procedure OPAOffice of Planning and Analysis OPACOperations (Office for) Arms Control OpAmpoperational amplifier OPCCOffutt Processing and Correlation Center op. cit.opere citato, in the work cited OPCWAmerican Translation: International Chemical Weapon Inspectorate OPDoperational plan document

OPDARoptical direction and ranging OPEC1. Organization of Petroleum Exporting Countries 2. On-Premises Educational Committee OPEIUOffice and Professional Employees International Union OPDoperational plan document OP-FTIRopen path Fourier transform infrared spectrometer OPM1. Operations Performance Monitor OPMODELoperational model OPNAVOffice of the Chief of Naval Operations OPORDoperational order Opsoperations OPQCOffice Professionals Quality Council. OPSECoperations security OPSELoption select OPTASMoptical target signature model OPTEVFOROperational Test and Evaluation Force (Navy) OPXoff-premise extension OQPorganizational quality plan OR1. Oak Ridge 2. occurrence report 3. operations requirements 3. operational readiness Oralloyoriginal meaning: Oak Ridge alloy ORISEOak Ridge Institute for Science and Education ORLAoptimum repair-level analysis

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ORMother required material ORNLOak Ridge National Laboratory OROak Ridge Operations (DOE) ORPSoccurrence reporting and processing system ORRoperation readiness review ORRIBLEOak Ridge reactor inlet blockage code (computers) ORSorganization reconstruction system ORTAOffice of Research and Technology Applications ORVoff-road vehicle Ososmium (chemical symbol) OS1. operating system 2. office of space OSAOptical Society of America OSAGoffice systems advisory group OSAPoperational survivability assessment program OSC1. on-scene commander 2. oscilloscope 3. Office of Scientific Computing (DOE) OSDOffice of the Secretary of Defense OSEOffice of Security Evaluations OSHA1. Occupational Safety and Health Administration 2. Occupational Safety and Health Act OSHWPPoccupational safety and health worker protection plan (or process) OSIopen systems interconnect

OSIAon-site inspection agency OSLoptically stimulated luminescence (see COSL) OSMon-site monitor OSNPOffice of Space Nuclear Projects (DOE) OSOoffensive systems officer OSP1. operational safety procedure 2. Office of Special Projects (DOE) OSR1. operational safety requirements 2. operational safety report OSS1. Office of Safeguards and Security (DOE) 2. operational storage site 3. operating system software OSSPoutstanding student summer program OSToperational suitability test OSTDoff-site technical director OSTIOffice of Scientific and Technical Information (DOE) OSTPOffice of Science and Technology Policy OSWEROffice of Solid Waste and Emergency Response OToperational test OTAOffice of Technology Assistant OTDOffice of Technology Development OTDRoptical time-domain reflectometry OT&Eoperational test and evaluation OTEAoperational test and evaluation agency

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OTECocean thermal energy conversion OTFoptical transfer function OTHover the horizon OUoperable unit OUOofficial use only OV1. Office Vision 2. organic vapor OVAorganic vapor analyzer OWBPAOlder Worker Benefits Protection Act OWIOffice of Waste Isolation (now Office of Nuclear Waste Isolation) Oyorralloy (35U) OYOCone-year-on-campus ozounce

P p-pico- (a prefix indicating 10-12) p1. proton 2. page (plural is pp) P1. peta- (a prefix indicating 1015) (Not to be used for poise in dynamic viscosity) 2. precision 3. phosphorous (chemical symbol) 4. Pershing Missile (as in Pershing II or PII) 5. property 6. pressure Pa1. protactinium (chemical symbol) 2. pascal (unit of pressure or stress) pApicoampere PA1. power amplifier 2. prearmed 3. public address 4. pressure adviser 5. protected area 6. production agency

7. position analyzer 8. progress assessment 9. preliminary assessment PAA1. primary aircraft authorization 2. procurement action approval PAAAPrice Anderson Amendments Act PAACprogram analysis adaptable control PAB1. Project Advisory Board 2. Packaging Advisory Board PABXprivate automatic branch exchange PAC1. Pershing airborne computer 2. Physical Acoustics Corporation PACAProfessional Aerospace Contractors Association PACAFPacific Air Force PACCSpost-attack command control system PACEplant and capital equipment PACESpressurized-air-combustor exhaust simulator PACOMPacific Command PACPADSPortsmouth alarm communication processing and display system PACXPrivate Automatic Computer Exchange PAD1. procurement action documentation 2. Pajarito dynamics (computers) PADARpassive detection and ranging PADSprocurement assistance data system PAGprotective action guide PAGOSAa data-parallel version of the shock-wave physics code: MESA

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PAHRpostaccident heat removal PAIRpowered air purifying respirator PAL1. permissive action link 2. phase alternate line 3. programmable array logic 4. protective action levels 5. program area leader PAM1. pulse-amplitude modulation 2. prearm monitor 3. pulse-accumulation module PAMTRAK or Pam Trakpersonnel and material tracking (system) PAN1. peroxyacetylnitrate 2. percussion actuated nonelectric (disrupter) PAO1. Pinellas Area Office (DOE) 2. public affairs officer PAP1. performance action plan 2. personnel assurance program (or plan) PAPSpermissive arming and protection system par1. paragraph 2. parallel 3. parenthesis PARCCprecision, accuracy, representa-tiveness, completeness, and comparability PARCSperimeter acquisition radar (attack) characterization system Par-Qphysical activity readiness questionnaire PAS1. primary alerting system 2. protective aircraft shelter (see HAS) PASCprobability of adversary sequence completion PASEMpassive environmental monitor PA/SIpreliminary assessment/site investigation

PASS1. personnel access security system 2. personnel administrative support system PASTAprogram for application to stress and thermal analysis (computer code) PASTFPhotovoltaic Advanced Systems Test Facility PAT1. progress assessment team 2. plutonium air-transportable (container) PATBtriaminotrinitrobenzene PATRAMpackage and transport of radioactive material PATRICIApractical algorithm to retrieve information coded in alphanumeric (computer program) PATSprototype automatic target screener PAVE PAWSprecision acquisition vehicle entry phased array warning system PAVINGa mesh-generation software algorithm PAWSportable acoustic wave system Pblead (chemical symbol) PBpulse battery PBEprompt burst energetics PBFAparticle-beam fusion accelerator (PBFA II is the worlds most powerful ion source) PBFTUprebuilt flight test unit PBGCPension Benefits Guaranty Corporation PBPTpixel-by-pixel transfer] PBVpost-boost vehicle

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PBWparts by weight PBX1. plastic bonded explosive 2. private branch exchange (teletype) 3. public branch exchange PC1. printed circuit 2. polymer concrete 3. photoconductive 4. port contenders 5. personal computer 6. PAL controller 7. physicians certificate 8. protective clothing P-Cplano-convex PCAphysical configuration audit PCAPprocess capability assurance program PCB1. printed circuit board 2. polychlorinated biphenyl 3. personal computer board PCC1. Platoon Control Center 2. percent correct classification 3. Policy Coordinating Committee 4. Pressure Certification Committee 5. primary component cooling PC-CAPRSpersonal computer compensation and performance review system PCCSported coaxial cable sensor PCD1. program control document 2. physicians certificate of disability PCE1. PAL control equipment 2. per-chloroethylene P&CEplant and capital equipment pcfpounds per cubic foot; preferred: lb/ft3 PCI1. permanent complete incapacitation 2. pellet-clad interaction 3. peripheral component interconnect PCLpositive control launch

PCM1. pulse code modulation 2. pulse count modulation 3. pulse colliding mode (locked) PCMDIprogram for climate modeling, diagnosis, and intercomparison PCNpolyurethane-coated nylon P-Codeprecision code PCPproduct change proposal PCRprogram change request PCS1. project (or property) control system 2. power conversion system 3. project control specialist PCSDprogrammable communications security device PC/SPRportable computer/seal pattern reader pctpercent (with a number, the symbol % is preferred: 15%) PCT1. peak clad temperature 2. process certification team PCTAPpositive control turnaround point PCTHa parallel shockwave physics code Pdpalladium (chemical symbol) PD1. pulse duration 2. pulse doppler 3. potential difference 4. performance decrement 5. program direction PDprobability of detection; sometimes written as Pd P&Dprovide and describe PDAprincipal development activity PDACPhotovoltaic Design Assistance Center

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PDB1. power distribution box 2. plant damage bin PDC1. power drive controller 2. polycrystalline diamond compact PDDproject data document PDEpartial differential equation PDFprobability density function PDI1. powerdown interrupt 2. project data interface pdlpoundal PDL1. Program Design Language 2. Process Development Laboratory (obsolete; now the Advanced Manufacturing Processes Laboratory) PDM1. pulse duration modulation 2. portable data module 3. power density monitor 4. product data management PDMEportable data module emulator PDOprocess development order PDP1. programmed data processor 2. preferred dentist program PDR1. preliminary design review 2. prototype design review PDS1. protected distribution system 2. personnel data sheet 3. processing and display system PDSPplutonium-dispersed studies program PDUprocess demonstration (or development) unit PDWphosphate development works PDWGprogram development working group peprobable error

PE1. pyroelectric 2. polyethylene 3. professional engineering P&Epersonnel and education PEARLpersonnel expertise and resource listing PECSprobabilistic evaluation of cladding stress (computers) PECVPplasma-enhanced chemical vapor deposition PED1. photoelectric detector 2. professional experience date (MLS) PEEKpolyetheretherketone PEGAparameter estimation with genetic algorithms PEISProgrammatic Environment Impact Statement PEL1. property on external loan 2. permissible exposure limit (or level) PEL/MELproperty on external loan/material on external loan PEM1. passive environmental monitors 2. production evaluation missile PENAIDSpenetration aids PEOprogram executive officer PEPperformance enrichment program PEPCIproviding emergency presidential communications interface PEPERpropellants, explosives, and pyrotechnics evaluation and reapplication PEPSphotovoltaic electric power system

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PERDprofessional experience in research and development (MTS) PERMITSplant engineering management information and tracking system PERSEPPershing survivability evaluation program PERTprogram evaluation review technique (computers) PESplant electrical system PETpositron emission tomography PETCPittsburgh Energy Technology Center PETLProcessing and Environmental Technology Laboratory PETNpentaerythritol tetranitrate (explosive) PEVpyroelectric voltage (array) PEVNpolyethylene co-vinyl nitrate pFpicofarad PF1. protection factor 2. power factor PFApower FORTRAN accelerator PFBCpressurized fluidized-bed combustion PFCplasma facing component PFGPrecision Fabrics Group, Inc. PDWphosphate development works PFMpulse-frequency modulation PFMAINTpermanent file maintenance (computers) pfm/cwpulse frequency modulated/ continuous wave

PFN1. pulse-forming network 2. prompt fission neutron PFRPprocess to further reduce pathogen PFSprotected firing station PGprocess gas PGA1. pin grid array 2. phase gradient autofocus PGMprecision-guided munition PGPprofessional graphics producer PGSperimeter guard station ph1. phase 2. phot (illuminance; use lux instead) pHpotential of hydrogen PHApreliminary hazard assessment PHC1. preferred health care 2. preliminary hazard classification Ph.D.Doctor of Philosophy PHERMEXpulsed high-energy radiographic machine-emitting x-rays PHTSprimary heat transport system PHYSTpit hydriding safety test PI1. principal investigator 2. probability of intercept (see PK) 3. purchasing instruction 4. performance indicator 5. probability of interruption 6. product improvement 7. pressure installer PIaPershing 1a (missile system) PIA1. peripheral interface adapter (computers) 2. parallel interface adapter PIATpublic information assistance team

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PIBALpilot balloon PIC1. polymer-impregnated concrete 2. polyethylene-insulated conductor 3. Personnel Information Center 4. plastic-insulated cable 5. PINS information component PICSproperty inventory control system PID1. personnel identification device 2. pulse-integrating detector P&IDpiping and instrument drawing PIDASperimeter intrusion detection and assessment system PIE1. post-irradiation examination 2. partners in education PIFproductivity investment fund PIFITEpipe flooding transient (computers) PIMpulse interval modulation PIMS1. passive infrared motion sensor 2. purchasing information management system PIN1. personal identification number 2. P-type, intrinsic N-type PINEXpin experiment PINGpulsed interrogation neutron and gamma (methodology) PINPALphysical inventory pallet PINSproliferation information network system PINCAparallel integrated computer analysis PIO1. programmed input/output 2. peripheral input/output PIOCSphysical input/output control system (see LIOCS)

PIP1. peripheral interchange program 2. pre-arm in progress 3. programmable image processor 4. pulsed integrating pendulum 5. public involvement program PIPERpulse-intense plasma for exploratory research PIRpassive infrared PIVpositive identification verifier PIVSPortable Integrated Video System PIWGpublic involvement working group pixelpicture element PJAproper job analysis PJIproper job instruction Pk or PKprobability of kill (see PI) PKEprocess knowledge evaluation pkgpackage Plpoiseuille (viscosity) PLpath length PLBRprototype large breeder reactor PLDprogrammable logic device PLMSpylon launcher missile simulator PLMSCPpylon launcher missile simulator computer program PLRSposition locating and reporting system PLSprelaunch survivability PLUTOprediction of molten-fuel behavior under transient overpower conditions (computers)

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PLYWDprecision low yield weapon design (Air Force) PLZTlead lanthanum zirconate titanate p.m.post meridiem (after noon) Pmpromethium (chemical symbol) PM1. phase modulation 2. pulse modulation 3. photomultiplier 4. preventive maintenance 5. project manager 6. particulate matter PMAprimary management area PMATSproperty management assets tracking system PMCTPAL management control team (or test) PMDIpolymeric diisocyanate PMF1. performance management form 2. probable maximum flood PMI1. Project Management Institute 2. probable measurement inaccuracy PMMpulse mode multiplex PMMApolymethyl methacrylate PMP1. parts, materials, and processes 2. project (or performance) management plan PMRproton magnetic resonance PMRFPacific Missile Range Facility (Navy) PMS1. property management system 2. program management system 3. planned maintenance system PMT1. Polymicro Technologies 2. process (or performance) management team 3. photo-multiplier tube PMTFPlasma Materials Test Facility

PMVPAL material verifier P/Npart number (sometimes written as PN) PNApulse neutron activation PNAFprime nuclear airlift force PNCPower (Reactor and) Nuclear (Fuel Development) Corporation PNEpeaceful nuclear explosion PNETPeaceful Nuclear Explosions Treaty PNGVPartnership for a New Generation of Vehicles PNLPacific Northwest Laboratory PNPpositive-negative-positive (electronics circuits) PNSParabolized Navier-Stokes (computer code) Popolonium (chemical symbol) POpurchase order POC1. point of contact 2. proof of concept POCCPlant Operations Control Center POC/ETproof of concept/experimental testbed POGproject officers group POINTERparticle orientation interferometer POLICEprotecting our lives, institutions, communities, and enterprises POMprogram objective memorandum PONCprice of nonconformance

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POP1. period of performance 2. plan of operations and practices POPSprobabilistic evaluation of transient overpower cladding stress (computers) PORPLUGporous plug heat-generating blockage (computers) pospositive POSpoint of sale Post-IOCpost-initial operational capability POTASprogram for technical assistance (to IAEA) safeguards POTUPershing operational test unit POTWpublicly owned treatment work pp1. pages 2. past participle PP1. peak to peak 2. pilot production 3. Pinellas Plant PPAproperty protection area ppbparts per billion PPBSplanning, programming and budget system PPCproduction process characterization PPCMportal perimeter continuous monitoring P&PDproduction and planning directive PPE1. personnel protection equipment 2. PAVE PAWS East PPIprocess prove-in PPLpreferred parts list P-Planprogramming plan

ppmparts per million PPMpulse position (or pulse phase) modulation PPMOPershing Project Management Office P&POplanning and programming order PPPDpilot-production program definition PPPLPrinceton Plasma Physics Laboratory PPRCPulsed-Power Research Center ppspulse per second PPS1. plant protection system 2. plutonium protection system 3. physical protection system 4. preliminary planning schedule PPSCPulsed Power Safety Committee PPSEPAVE PAWS Southeast PPSWPAVE PAWS Southwest pptparts per thousand PPTperformance prototype trough PP/TMSpilot production/tool-made sample PPWPAVE PAWS West PQproduct qualification PQA1. Presidents Quality Award 2. preliminary quality assessment PQMIprocess quality management and improvement PQTprocess qualification team (obsolete; now qualification evaluation team) Prpraseodymium (chemical symbol)

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PR1. purchase requisition 2. public relations 3. personnel representative 4. proprietary (information) PRA1. probabilistic risk assessment (or analysis) 2. programmatic risk assessment 3. PAL recode adapter PRAIPAL recode adapter interface PRAMparameter RAM PRC1. programmatic risk classification 2. Peoples Republic of China PRCFPlutonium Recycle Critical Facility PRCRpurchase requisition/change requisition PRD1. primary responsible department 2. program requirements document PRDAprogram research and development announcement PREPproduction risk evaluation program PRESS-CMpit reuse for enhanced safety and security cruise missile PRFpulse repetition frequency PRIPhysical Research Instrumentation, Inc. priprimary PRISMphysically reasonable infrared signature model PRLSportable, reconfigurable line sensor PROprimary responsible organization PROMprogrammable read-only memory PROMPTallows fast computation of a robotic system manipulators movement to avoid collision

PRONTOSNL mechanic code (dynamic) (See SANTOS) PROTECprogrammable ordnance technology PROVCORPSVProvisional Corps, Vietnam PRP1. pulse repetition period 2. personnel reliability program PRR1. pulse repetition rate 2. protective response recommendation PRRSpenetration resistance rating system PRS1. personnel reporting system 2. plasma radiation source PRSCpost removal site control PRTplatinum resistive thermometer PRVMpeak-reading voltmeter pspicosecond PS1. product (or primary) specification (drawing number) 2. primary specification P&S1. production and systems 2. production and surveillance PSA1. Presidential Special Aircraft (Andrews AFB, MD) 2. power switching assembly 3. PAL switch adapter 4. preliminary safety analysis 5. project support agreement PSACPressure Safety Advisory Committee PSARpreliminary safety analysis report PSC1. protective sample container 2. Principal Subordinate Command (NATO) 3. pressure safety committee PSDprevention of significant deterioration psfpounds per square foot; also lb/ft2

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psipounds per square inch; also lb/in2 PSI1. personnel security interview 2. Pollutant Standards Index psiapsi absolute psigpsi gauge PSKphase-shift keying (see FSK) PSMprogram support manager PSN1. prototype secure network (computers) 2. proper shipping name 3. power systems modernization PSOprogram senior officials PSPPension Security Plan PSPMPressure Safety Practices Manual PSR1. program status review 2. perfectly stirred reactor PSS1. pressure-sensitive seals 2. perimeter surveillance system 3. probabilistic safety study PSU1. program storage unit 2. portable surveillance unit PSZTlead tin zirconium titanate PT1. production type 2. Pigmy Trilock (connectors) 3. point 4. product tester (as in PT3003) 5. property transfer P&Tpackaging and transporting PTCPentagon Telecommunications Center PTDproduct test data PTFphase transfer function PTFEpolytetrafluorethylene

PTM1. pulse time modulation (or multiplex) 2. pan/tilt mount PTPpeak to peak (ratio) PTRpressure test record P&TSCpackaging and transporting safety committee PTTPostal Telephone and Telegraph PTTSApre-tiger team self-assessment PTVparachute test vehicle Puplutonium (chemical symbol) Pubpublication PUCPAL unit card PUPparent unit parts PUPSpick-up points PUREXplutonium-uranium reduction extraction PVphotovoltaic(s) PVAphotovoltaic array PVDFpolyvinylidene fluoride PVEpreset/verify/execute PV&KDpressure volume and constant X displacement PVTpressure-volume-temperature PVTBproductivity validation testbed pW picowatt PW1. pulse width 2. process water PWA1. process waste assessment 2. printed wiring assembly

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PWBprinted wiring board PWCpassword control PWDRpreliminary weapon development report PWGprioritization working group PWGMprocess water gamma monitor PWMpulse-width modulation PWRpressurized-water reactor PWTparachute wind tunnel PXPantex Plant PXDmanganin wire pressure transducer Pzpi ze (pressure) PZTPb (lead) zirconate titanate

Q QA1. quality assurance 2. quality assessment QAAQuality Assurance Agency (DOE) QAERqualification acceptance equipment release QAIAQuality Assurance Inspection Agency (DOE) QAIPquality assurance inspection procedures QAMQuality Assurance Manual QAPquality assurance procedure (or program)

QAPMTQuality Awareness Process Management Team QAPPQuality Assurance Project Plan QAPPCQuality Assurance Program Planning Committee QARquality action request QASLQuality Assurance, Sandia (National) Laboratories QASTquality assurance service test QATquality action team QATIquality assurance test instructions QAVIquality assurance verification instructions QBEquery by example QBFquery by form QC1. quality control 2. quality circle 3. quality criteria 4. quality coordinator QCDquantum electrodynamics QCRquality control/reliability QCTquality coordinator team Q/Dquantity/distance QDA1. quartz-based digital accelerometer 2. qualified designated alternate QEDquantum electrodynamics QEPquality engineering project QERqualification (or quality) evaluation release QERDqualification evaluation research for dismantlement

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QESTquality evaluation systems tester QETqualification evaluation team (formerly process qualification team) QFDquality function deployment QICquality inspection control QIPquality improvement project QIPMquality improvement process management QITquality improvement team QLFTqualitative fit test QLORDquantum-limited optical resonance detector Qmquartermaster QMCquantum Monte Carlo (numerical simulation method) QMLqualified manufacturers list QMSquality management system QNFTquantitative fit test QNOWquality news on weapons QP1. quartz phenolic 2. quality plan 3. quick pay QPLqualified parts list QRA1. quick reaction alert 2. qualitative risk analysis QS1. qualification sample 2. quality system QSCquality steering council QSGquality support group QSIQuantum Systems, Inc. (Albuquerque)

QSPquestionnaire for sensitive positions qtquart QTEqualification testing evaluation qtrquarter qtyquantity quadquadrant qualqualitative QUESTquality-enhancement strategies QVquality verification QUICquasi-instantaneous control QWLquality of work life

R rradius R1. roentgen (unit of absorbed radiation dose exposure; see rad) 2. resistance 3. radiant (energy hazard) (Rdegrees Rankine (e.g., 99(R), used in the Rankine temperature scale R1, R2Range 1, Range 2 R2rewards and recognition RARockwell, A scale hardness RBRockwell, B scale hardness RA1. relay assembly 2. radiation area 3. risk assessment RAASremedial action assessment system

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RAC1. Research Advisory Committee 2. radioactive cargo 3. response action contractor RACSremote access system RACTreasonable available control technology rad1. radian (plane angle 2. unit of absorbed radiation dose liberating 100 ergs of energy per gram or 10-2J/kg (supersedes the roentgen) RAD1. radiation absorbed dose 2. random-access device 3. radioactive radarradio detection and ranging (originally an acronym but now accepted as a word) RADCON1. radiation contamination 2. radiation control RADECradiation detection capability RADEXradiation exposure RADIAC1. radiation detection, indication, and computation RADINTradar intelligence RADMRear Admiral Radon transformnamed for J. Radon who invented the inversion in a function-line integral RadProradiation protection rad/sradians per second (preferred over rad/sec) RADWASTEradioactive (and mixed) waste RAERoyal Aircraft Establishment RAeSRoyal Aeronautical Society

RAF1. Royal Air Force 2. resistance after fire RAISERural American Indian Science Education RALrecommended allowance list RAM1. random-access memory 2. read-and-modify memory (digital controllers) 3. radioactive material 4. RADEC analysis and monitor 5. rocket-assisted mode 6. radar-absorbing (or absorption) material 7. radiation area monitor 8. reliability, availability, and maintainability RAMS1. remote atmospheric monitoring system 2. radiation area monitor system RANrestricted access network RAP1. restricted access program 2. remedial action program RAPADSrapid (deployment) access delay system RAPID1. radiation pattern identification 2. retrofit-assisted parachute in-flight delivery RAPRENOXrapid reduction of nitrogen oxides RAS1. roof antenna system 2. reactor analysis and safety 3. routine analytical services RASERradio-frequency amplification by stimulated emission of radiation RASLEradiating and absorbing shock layer equilibrium RASSPVDNrandom sphere (model of) simultaneous particle and vapor deposition RATLERrobotic all-terrain lunar exploration rover RATTradioteletype

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RB1. reentry body 2. rule based RBA1. reentry body assembly 2. radiological buffer area RCBretrieval containment building RBErelative biological effectiveness (of radiation) RBFTUrebuild flight test unit RC1. radiochemical 2. reinforcing capability R-Cresistance capacitance RCA1. root cause analysis 2. Radio Corporation of America RCAFRoyal Canadian Air Force RCDrelease circuits disconnect R&CGResource and Coordination Group RCIreceipt for classified information RCICreactor core isolation cooling RCMreliability centered maintenance RCMSremoval cost management system RCPreactor cooling pump RCRAResource Conservation and Recovery Act (1976) RCS1. reactor control system 2. radar cross section 3. reactor coolant system RCSCradiological and criticality safety committee RCSIreactor coolant system integrity RCSMradar cross-section measurement

RCUreference control unit RCWrecirculated cooling water rdrutherford (a unit of the decay rate of radio-active material) RD1. restricted data 2. remedial design R&Dresearch and development RDAResearch and Development Associates (DNA subcontractor) RD&Aresearch, development, and application R to D to Aresearch to development to application RDDradiation dispersal device RD&Dresearch, development, and demonstration RDDT&Eresearch, development, demon- stration, testing, and evaluation RDEradiation-detection equipment RD&Eresearch, development, and engineering RDFradio direction finder RDJTFRapid Development Joint Task Force RD/RAremedial design and remedial action RDRMrambus direct random access memory RDRFreceive data register full (computers) RDSrecords depository system RDTreactor development and technology RD&Tresearch, development, and testing

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RDT&Eresearch, development, testing, and evaluation RDU1. remote data unit 2. RADEC data unit RDXabbreviation for the explosive cyclomite RE1. rare-earth 2. real R&Eresearch and engineering REAretard airburst REAC/TSRadiation Emergency Assistance Center/Training Site (Oak Ridge, TN) READrenewable energy for African development REAPSreportable excess automated property system REASUREreporting evaluation auditing system for unsatisfactory reports REBrelativistic electron beam REBArelativistic electron-beam accelerator RECAPreview and command assessment of projects RECCEreconnaissance REDACremote detection and control REDARradiation and environmental data acquisition and recording REDCOMreadiness command redoxreduction oxidation REDSreactor electronic distribution system REECoReynolds Electrical and Engineering Co. (subsidiary of EG&G, Inc.) refreference

ref symreference symbol (also RS) REG1. range extender with gain 2. retard groundburst REGALreport generator algorithm reporting REHRreactor heat removal REIRaymond Engineering, Inc. remroentgen equivalent man (or mammal) (use sv for sievert instead) REM1. recovery exercise module 2. recognition memory (computers) 3. radiation exposure model 4. remedial (planning) REMBASSremote battlefield sensor system reproentgen equivalent physical (a unit of ionizing radiation) RERrelative encryption range RESremote equipment shelter RESCreactor subcriticality RESLRadiological and Environmental Science Laboratory RESTretrofit evaluation system test RET-ERretirement engineering release RETRVIRremote telerobotic vehicle for intelligent remediation revrevolution rev/srevolutions per second; rps is preferred RF1. radio frequency 2. response force 3. Rocky Flats 4. research foundation

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RFA1. request for analysis 2. RCRA facility assessment RFAORocky Flats Area Office (DOE) RFCSrequest for change of scope RFD1. rotating flexible decelerator 2. reduced forward deployment 3. radio frequency detection RFFresponse force facility RFFSrequest for facilities support RFI1. radio-frequency interference 2. request for information 3. RCRA facility investigation 4. RCRA field investigation RF/MWradio-frequency and microwave (frequency) RFP1. request for proposal 2. Rocky Flats Plant (EG&G) RFQrequest for quotation RFSradar fire signal RFT1. response force time 2. respirator fit test (datasheet) RFTUradar flight test unit RGRegulatory Guide RGBred, green, blue RGCRio Grande Chapter (Local Chapter of the Project Management Institute) RGHrare-gas halogen RGXreverse geometry x-ray RGZrecommended ground zero Rhrhodium (chemical symbol) RH1. relative humidity 2. remote handled

RHALErobust hydrodynamics arbitrary Lagrangian Eulerian RHCPright hand circularly polarized RHEPPrepetitive high-energy pulse power (RHEPP II is the worlds highest average power electron-beam source) RHFreport holdings file RHICradiation-hardened integrated circuit RHMroentgen per hour at one meter rhoproduct of fuel density RHORockwell-Hanford Operations RH-TRUremote handled transuranic waste RI1. radio interference 2. Rockwell International 3. responsible individual (see RP) 4. remedial investigation RIA1. Robotics Industries Association 2. range insensitive axis 3. regulatory impact analysis RIBreference information base RIC1. resistance inductance capacitance 2. Rare-Earth Information Center RIDrequirements identification document RI/FSremedial investigation/feasibility study RIGRisk-based Inspection Guide RIMrelative importance measure RIMSroll-stabilized inertial measurement system RIMUreentry inertial measurement unit RIOM ManualRACON Installation, Operation, and Maintenance Manual

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RIP1. Retirement Income Plan 2. rapid interface phototyping 3. research in progress RIPErobot independent programming environment RIPLrobot independent programming language RISCreduced instruction set computer RISERegional Initiatives for Science Education (The program is to enhance science education from grade levels Kindergarten to 12th grade) RITrecord (or receipt) of internal transfer RIUradar interface unit RLradioluminescent RLCUremote launch control unit RLGAring laser gyro assembly RLPGregenerative liquid propellant gun RMAreturn material authorization RMAPRisk Management Action Plan RMFremote monitoring facility RMIEPrisk methodology integration and evaluation program RML1. remote maintenance line 2. reactive multi-layers RMMAradioactive material management area RMPRisk Management Program rms or RMSroot-mean-square RMSrotating mass storage

RMSELRobotic Manufacturing, Science, and Engineering Laboratory RMTremote maintenance terminal RMWSrail mobile weapon system RMWTSradioactive and mixed waste tracking system Rnradon (chemical symbol) RNregency net RNDrules need date RNLNRoyal Netherlands Navy rWcreciprocal ohm centimeter (electrical conductivity) rWmreciprocal ohm meter RO1. retrofit order 2. reactor operator 3. remains open ROArecord of assembly ROADSrange optimal advanced-development system ROBATrobotics obstacle breaching assault tank ROBCOMrobot communication ROC1. required operation characteristics 2. required operation capability ROCAPSremote operation of cask penetration system ROCOMPradio- or computer-operated mobile platform ROD1. record of decision 2. record of dis-assembly 3. report of discrepancy RODANrobotic optical disk access node

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ROEremote operating equipment ROI1. return on investment 2. record of origination ROKRepublic of Korea ROM1. read-only memory (computers) 2. rough order of magnitude ROMCread-only memory control ROOrecord of origination RORSATradar ocean-reconnaissance satellite ROSESremote oscilloscope sealed environment system ROTLremote office test line ROV1. remotely operated vehicle 2. report of violation ROVERremotely operated vehicle for emplacement and reconnaissance RP1. radiation protection 2. rendezvous point 3. Reynold part (followed by the part number) 4. respiratory protection 5. responsible party RPCremote procedure cells RPDLRapid Prototype Development Laboratory RPGrocket-propelled grenade Rphroentgens per hour RPIRensselear Polytechnic Institute RPLreactor-pumper laser rpmrevolutions (or rate) per minute (see rps) RPMradial power monitor

R&PMRegulations and Procedures Manual (DOE) RPPrespiratory protection program RPPArespiratory protection program administrator RPQrespiratory protection questionnaire rps or rev/srevolutions per second (rps is preferred) RPSreactor protection system RPUreceiver/processor unit RPV1. remotely piloted vehicle 2. reactor pressure vessel RQreportable quantities R&QAreliability and quality assurance RQPresponsibilities, qualifications, and performance (ES&H) R/Rrecapture/recovery RRARadiation Research Associates, Inc. RRCRegional Response Center RRDAResource Recovery and Disposition Account RRIRCRA remedial investigation RRMTreactor and reactor material technology RRPCradiological respiratory protection coordinator RRPSrobotic reconnaissance point sensor RRRreduced residual radiation RRRVrate of rise of recovery voltage

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RRSASrobotic radiation survey and analysis system RRTregional response team RRVrobotics reconnaissance vehicle RS1. reentry system 2. reference symbol (also abbreviated: ref. sym.) 3. reprocess specification r/srevolutions per second (rps is preferred) RSA1. reimbursable (or reimbursement) spending account 2. Radiation Safety Associates, Inc. 3. Rivest, Shamir, Adelman RSADrequirements and self-assessment data-base RSASregional seismic array system RSCFGrevolutionary security concepts focus group RSCRCregional superfund community relations coordinator RSE1. receiver shield enclosure 2. removal site evaluation RSI1. reactor safety information 2. repetitive stress injury RSLRemote Sensing Laboratory (Las Vegas, NV) RSLPreentry systems launch program RSNFRoyal Saudi Naval Forces RSOreported significant observation RSP1. render-safe procedure 2. rapid solidification processing RSPAResearch and Special Programs Administration

RSS1. reactor safety study 2. remote security station 3. relay station status 4. remote sub-system 5. ready safe switch RSSMAPReactor Safety Study Methodology Application Program RSSPSremote sensor system for physical security RSTAreconnaissance, surveillance, and target acquisition RSTAKAreconnaissance, surveillance, target acquisition, kill, and assessment RSTNregional seismic test network RSVrobotic security vehicle RSVP1. Remote Sensing and Verification Program 2. Retired Senior Volunteer Program rt or RT1. room temperature 2. rise time RT1. room temperature 2. rise time 3. real time RTAFread-time aperture flux RTB1. reentry thermal battery 2. robotic testbed RTBFReadiness in Technical Base and Facilities RTDMremote transponder data modules RTDPRobotics Technology Development Program (DOE) RTECSregistry of toxic effects of chemical substances RTGradioisotope thermoelectric generator RTLresistor-transistor logic (computers) RTOrail transportation office

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RTP1. restructured test program 2. rapid thermal process RTRroutine technical report RTS1. return from subroutine 2. removal tracking system 3. run time storage RTVroom temperature vulcanizing (or vulcanized) RUG by ball70 carbon atom fullerene RUPLradar-updated path length RV1. reimbursement voucher 2. reentry vehicle 3. reactor vessel RVAradar (or range), velocity, and attenuation RVBretractable vehicle barriers RVCreactor volume control RVRRobotic Vehicle Range RWriver water RWAreaction wheel assembly R waveRayleigh wave (seismology) RWEreactor works engineer RWISraw water intake structure RWLreactor water level RWMCRadioactive Waste Management Complex RwoHreliability without hermeticity RWPradiation work permit RWQCBregional water quality control board RXreactors

Ryrydberg (see kayser) RZradiation zone

S ssecond S1. survivable 2. sulfur (chemical symbol) 3. siemens 4. secret S21. safeguards and security 2. survivability and security S3safety, security, and survivability SA1. Sandia (National Laboratories) apparatus 2. storage activities 3. staging area 4. safety assessment 5. standard assembly 6. self-assessment 7. SNL apparatus S&Asampling and analysis SAALCSan Antonio Air Logistics Center SAATSandia accessibility advocacy team SABRESandia accelerator and beam research experiment SAC1. Sandia auxiliary closure 2. Strategic Air Command (The Air Combat Command has now combined SAC and TAC into one command.) 3. Support Agency Coordinator SACASupport Agency Cooperative Agreement SACCSSAC Command Control System SACEURSupreme Allied Commander, Europe (NATO)

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SACLANTSupreme Allied Commander, Atlantic (NATO) SACNETsecure automatic communication network (DOE) SACRSAC regulation SACROCStrategic Air Command required operational characteristics SACSsafeguards alarm and communications system SADARMsearch-and-destroy armament SADCATstructural analysis of 3-D core assembly transient (computers) SADMsmall (or special) atomic demolition munition SAESociety of Automotive Engineers safsafed SAF1. security automated fabrication 2. safe, arm, and fuze SAFE1. safeguards automated facility evaluation 2. Sandia award for excellence SAFERsecurity and force-protection enhancement resources SAFETECsafety technology SAFFsafe, arm, fuze, and fire SAFMsafe monitor SAGEsemi-automated ground environment SAHPsolar-augmented heat pump SAIScience Applications, Inc. (La Jolla, CA) SAICScience Applications International Corporation

SAIRsafe and in-range SAKa one-dimensional kinetics computer code SALSafeguards Analytical Laboratory (Seibersdorf, Austria) SALAD1. slide-actuated, laser-armed detonator 2. seismic acoustic low-altitude aircraft detector SALCsystematic assessment of licensee performance SALEsafeguards analytical laboratory evaluation SALOGSSandia logic simulation SALSASNL application code designed to simulate complex fluid flows on large-scale parallel computers SALSIMSALOGS simulation SALTStrategic Arms Limitation Talks SAM1. sensor access manager 2. surface-to-air missile 3. scanning Auger microscope SAMAScientific Apparatus Makers Association SAMPSickness Absence Management Plan SAMPESociety for the Advancement of Material and Process Engineering SAMSSandia/Air (Force) materials study SAMSOSpace and Missile Systems Organization SAMSONsemiautonomous mobile system for ordnance neutralization SAMTState-of-the-art medium terminal

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SANSan Francisco Operations Office (DOE) SANDAC1. Sandia data acquisition computer 2. Sandia airborne computer 3. Sandia aerospace computer SAND DEVILSandia digitally encoded video junk SANDUSSandia digital underground system SANTOSSNL mechanic code (static) (see PRONTO) SAP1. simulation administration program 2. special access program SAR1. safety analysis report 2. synthetic aperture radar 3. supplied air respirator 4. search and rescue SARASuperfund Amendment and Reauthorization Act SARFspecial airburst radar fuze SARGEsurveillance and reconnaissance ground equipment SARLSandia Aerosol Research Laboratory SAROSsynthetic aperture radar for open skies SAROS Document Managerwindow based system that stores documents in the Mezzanine Library. The Mezzanine manages information using networks. SARP1. safety analysis report for packaging 2. severe accident risk program SAS1. safety analysis system (computers) 2. statistical analysis system 3. sealed (or secure) authentication system 4. secondary alarm station 5. Senate Armed Services (Committee) 6. synthetic aperture sonar 7. semi-annual soils 8. special analytical service 9. safety assurance system

SASAsevere accident sequence analysis SASGSafety Analysis Software Group (DOE) SASLa stress computer code SASPspecial ammunition supply point SASS1. special aircraft stores shop 2. sequential access storage system SAT1. security alert team 2. supervised autonomous testbed 3. staff assistant technical 4. satellite 5. Scholastic Aptitude Test SATCseismic/acoustic target classifier SATCAPsatellite capability SATCOMsatellite communications SATINSAC AUTODIN teletype interface SATTLIFSandia Transportable Triggered Lightning Instrumentation Facility SATURN The worlds most powerful plasma radiation source SAVsemi-annual vegetation SAVIsystematic analysis of vulnerability to intrusion SAW1. surface acoustic wave 2. squad automatic weapon 3. self-assessment work SAWESandia water-entry SAXSsmall-angle x-ray scattering Sb1. stibium (antimony) (chemical symbol) 2. stilb (optics) SB1. small business 2. surface burst SBASmall Business Administration SBCsingle-board computer

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SBELStructural Behavior Engineering Laboratory (Phoenix, AZ) SBIRsmall business innovative resource SBIRCCDSchottky barrier infrared charge-coupled device (computers) SBLOCAsmall break LOCA SBOstation blackout SBXsingle-board extension SBUStrategic Business Unit S2Csafety, security, and control Scscandium (chemical symbol) SC1. shape component 2. separable component SCAService Contract Act SCALEBOARDNATO designation for Soviet SS-12 missile SCAPSuperfund Consolidated Accomplishments Plan SCAQsignificant conditions adverse to quality SCARBSandia Corrective Action Review Board SCARS1. status, control, alerting, and reporting system (NATO) 2. system control and receiving station SCB1. semiconductor bridge 2. Sandia Classification Bulletin 3. sliding crash beam SCBAself-contained breathing apparatus SCC1. stress corrosion cracking 2. SECOM Control Center 3. Security Control (or Communications) Center

4. Switching Control Center 5. Security Command Center (SNL) 6. Sandia Compensation Council 7. Sandia Computer Committee SCCFsprayed chopped-carbon fiber SCIFsensitive compartmented information facilities SCIPsecurity-type lockbox SCCMstandard cubic centimeters per minute SCCS1. safeguards central control system 2. safeguards control and communications system 3. source code control system 4. single-code coded switch SCCTsurvivable command center technology SCDsource control drawing SCDCsignal certification device coder SCDRSandia Corporation Development Report (one of the designations for early SAND reports; now obsolete) scfstandard cubic feet scfhstandard cubic feet per hour SCIsensitive compartmented information SCIADscience advisor (SNL) SCILSsensitive countries information logging system SCIS1. security configuration information system 2. Service Center Integrated (or Information) System 3. survivable communications integration system 4. Sensitive Country Information Logging System (DOE) SCISEARCHScience Citation Index Search

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SCM1. sensor capabilities modeling 2. small-core memory 3. statistical crack mechanics SC-MSandia Corporation Miscellaneous (a designation for SAND reports; now obsolete) SCN1. Sandia Classified Network SCNMTAASouth Central New Mexico Technicians Affiliate Association SCOREService Corp of Retired Executives SCORESscenario-oriented recurring evaluation system SCP1. Squadron Command Post 2. shelter control panel 3. secure conferencing project 4. Sandia Clara plastics SCPRSandia Corporation progress report (obsolete: early SAND reports designation) SCPVsafeguards coordination and performance verification SCR1. silicon-controlled rectifier 2. Sandia contracting representative (buyer) 3. Semiconductor Research Corporation SCRRSandia Corporation research report (one of the designations for early SAND reports; now obsolete) SCS1. secure container system 2. supplementary cooling system 3. Sandia Contracting Specialist SCSCSmall Computer Support Center SCSDsecure codes storage device SCSIsmall computer system interface SCSPsingle-crystal silicon photovoltaics SCSRSandia Corporation Systems Report (obsolete: early SAND reports designation)

SCT1. stockpile confidence test 2. Super-conducting Core Technologies (Company) SCTIsodium components test installation SCTISsingle-channel transponder injection system SCTMSandia Corporation Technical Memorandum (obsolete; now SNL Internal Memorandum) SCUBAself-contained underwater breathing apparatus SCWservice clarified water SCWDSandia Corporation Weapon Development (one of the designations for early SNL SAND reports; now obsolete) SCWMTSNL chemical waste management team SCWOsupercritical water oxidation SD1. self-destruct 2. standard deviation 3. source data 4. safe drinking (water) SDA1. source data acquisition (computers) 2. system design alternatives SDACSstored data acquisition system SDBsmall disadvantaged business SDC1. Strategic Defense Command 2. shut-down cooling SDCSICsemi-domesticated critter scat identification chart (for hantavirus work) SDD1. safety determination documentation 2. system design description (or document) SDDBstockpile dismantlement database

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SDDMSecretary of Defense Decision Memorandum SDFStrategic Defense Facility SDHXshutdown heat exchange SDI1. strategic defense initiative 2. selective dissemination of information 3. steel door (or deck) institute SDLSpectra Diode Laboratories SDMscanning detection mode SDMSshared document management system SDPsubseabed disposal program SDR1. systems design review 2. Sandia delegated representative 3. spin dependent recombination 4. significant defect report (obsolete; now SFIR) SDRAMsynchronous dynamic random access memory SDSshutdown sequence SDT1. shock-detonation transition 2. signal data translator SDUslave display unit SDWspecial development warhead SDWASafe Drinking Water Act SEstandard error SEA1. Statement of Employee Account 2. Science Engineering Associates, Inc. SEABSecretary of Energy Advisory Board SEADsafeguards engineering and analysis database SEALsea-air-land (observation)

SEAMspin ejector adapter module SEAMISTScience and Engineering Associates membrane instrumentation and sampling technique SEARAstockpile evaluation and reliability SeaRAMsea radioactive materials SEASATSEAL (observation) satellite SEAVsecurity enhancement to Area V (Sandia/NM) SEBSource Evaluation Board SEBASscattering of electrons by atomic systems (computers) sec1. secure 2. secant SEC1. Securities and Exchange Commission 2. Sandia ES&H Council (obsolete; now SQLC) 3. secondary electron conduction SECASsecurity assurance SECDECsingle error correcting, double error correcting SECDEF or SecDefSecretary of Defense SECOMsecurity communications SECSYspin-echo correlated spectroscopy SED1. stockpile entry date (or data) 2. skin erythema dose (radiation) 3. statistical experimental design SEDECSemiconductor Equipment Development Center SEDOspecified external distribution only (obsolete; use a current unclassified release statement) SEEK-TALKjam-resistant radio (USAF)

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SEESsecurity exercise evaluation simulation (or system) SEFORsoutheast fast oxide reactor SEIspace exploration initiative SEISSupplemental Environmental Impact Statement SEL1. special equipment list 2. sound exposure level SEM1. scanning electron microscopy 2. sensor and environment monitor 3. Society of Experimental Mechanics 4. science, engineering, and mathematics SEMATECHsemiconductor manufacturing technology SEMSseafloor earthquake measurement system SEMYsummer employment (for) minority youth SENSecretary of Energy Notice SENAstudent (or summer) employment for Native Americans SENLEXsensor layout expert (system) SENSsuspect equipment notification system SEP1. spherical error of probability 2. selective employment package 3. systematic evaluation program 4. surface electrical potential 5. strike enable plug SEPEsources of ES&H personnel expense SEPGsoftware engineering process group SEPUPScience Education for Public Under-standing Program SEPWstrategic earth-penetrator weapon

seqsequence SEQRstockpile evaluation qualification release SER1. safety evaluation report 2. stockpile emergency report SERAsuperfund emergency response action SERAPHIMa high speed train that is a spin off from the coil-gun technology that was created at SNL SERCState Emergency Response Commission SERFSandia Engineering Reactor Facility SERISolar Energy Research Institute SERIPSIGINT/EW Readiness Improvement Program SERPSandia Employees Recreation Program SERSsurface-enhanced Raman spectroscopy SES1. Standards Engineers Society 2. system external specifications 3. stationary energy storage SESCSandia Explosives Safety Committee SETAFSouthern European Task Force (Army) SETECSemiconductor Equipment Technology Center SETSset equation transformation system (computers) SEUsingle-event upset SEVstockpile emergency verification

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SE/VMSsecurity-enhanced virtual memory system SF1. security force 2. special forces 3. superfund 4. significant finding SFA1. security fault analysis 2. systemic factors analysis SFDsystem field demonstration SFE1. Sandia-furnished equipment 2. slim loop ferroelectric SFEEsmall forces engagement exercises SFFTsuperconducting flux-flow transistor SFIsignificant finding investigation SFIRsignificant finding investigative report SFISstriped-filter image sensor SFKspecial-function keyboard SFMTSan Francisco-Moscow teleport (an electronic bulletin board) SFPESociety of Fire Protection Engineers SFRDsecret, formerly restricted data SFTstockpile flight test SG1. superconducting generation 2. silicon gate SGASandia Golf Association SGCSpace General Corporation SGEMPsystem-generated electromagnetic pulse SGMspark-gap modulation SGMLstandard generalized markup language (international standard for text markup)

SGT1. secure ground transport 2. safeguards transport SGTSstandby gas treatment system SH1. shear horizontal 2. sleeve housing SHACsolar heating and cooling SHADSandia helicopter acoustic detector SHAPESupreme Headquarters Allied Powers, Europe SHEACSafety, Health, and Environment Appraisal Committee SHEDsolar heat-exchange drive SHEEsafe high-energy explosive SHF or shfsuper-high frequency SH&FSafety, Health, and Facilities SHORANshort-range (radio) SHPOState Historic Preservation Office SHRPStrategic Human Resources Plan SHTseal head tank Sisilicon (chemical symbol) SI1. Systéme International d'Unites (International System of Units) 2. security inspector 3. Special Intelligence 4. storage inspection 5. site inspection 6. Salt Institute SIASemiconductor Industry Association (San Jose, CA) SIAMself-initiated attack missile (also known as Little David) SICstandard industrial classification

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SICADSsite-independent configurable alarm display system SICBMsmall intercontinental ballistic missile SICBM/HMLSICBM/hard mobile launcher SICSsafety injection control system SIDsite interface device SIDASsodium iodide detector (response) analysis software SIDSSSandia irradiator for dried sewage solids SIEDsophisticated improvised explosive device SIERspecial instruction engineering release SIEXsteady-state in-pile behavior of mixed-oxide fuels (computers) SIG1. special-interest group 2. selenide-isotope generator SIGDISCspecial-interest group (for optical) disks SIGINT/EWSignals Intelligence/Early Warning Sigmaa weapon data access designator SIKsystem independent kernel SILspeech interference level SIMstrategic issues management SIMDsingle instruction, multiple data SIMOXseparation by implementation of oxygen SIMPLEsubassembly interchange mixing program for flow effects (computers)

SIMS1. Sandia intruder motion simulator 2. standards information management system 3. Sandia issues management system sinsine sinhhyperbolic sine SINsite information network SINCGARSsingle-channel ground and aircraft radio system SIOPsingle integrated operational plan SIP1. stockpile improvement program (or plan) 2. shock-induced polarization 3. state implementation plan 4. Student Internship Program SIPEsoldier integrated protective ensemble SIPISouthwest Indian Polytechnic Institute SIR1. Sandia (National Laboratories) interior robot 2. semi-annual inventory report SIRASSandia independent review and appraisal system SIRENsearch intercept retrieve expulsion nuclear SIS1. safeguards information system 2. superconductivity information system 3. system internal specifications 4. shaft instrumentation system SIT1. sonar impingement test 2. silicon intensified target 3. system interface test SITANSandia inertial terrain-aided navigation SITBsystem integration testbed SITEsuperfund innovative technology evaluation

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SITVStanford Instructional Television SIVCsystematize, internationalize, vitalize, and commercialize SJPstandard job procedure SJSSASandia jump start self-assessment SKEDSSandia/Kirtland emergency database system SL1. strong-link (adjective); strong link (noun) 2. special linear SLA1. sequential launch adapter 2. sea, land, and air SLACStanford Linear Accelerator Center SLAPsaboted light-armor penetrator (or penetration) SLARside-looking airborne radar SLATECSandia/LANL AFWL Technical Exchange Committee SLATSsolar linear array thermal system SLAVESandia Laboratories Augmented VAX Editor SLBshallow land burial SLBMsubmarine-launched ballistic missile SLCsubscriber looper carrier SLCMsea-launched cruise missile SLCSstandby liquid control system SLEDSSandia Laboratories engineering drawing standards SLEP Stockpile Life Extension Program SLFCUSandia Laboratories Federal Credit Union

SLFEslim loop ferroelectric SLFSstronglink firing switch SLICSandia Laboratories Information Center SLIFERshorted location indication from electrical resonance SLIMSandia/LANL interface mockup SLIMEsublethal interdicting materials experiment SLISSandia Livermore information system SLLSandia Laboratories, Livermore (obsolete; now SNL/California) SLM1. standard liters per meter 2. subscriber loop multiplex 3. sound level meter SLPSandia (National) Laboratories Policy (obsolete now CPR) SLS1. strained-layer superlattice 2. Strained-layer semiconductor 3. strong-link switch 4. selective laser sintering SLSCsmall linear-shaped charge SLTstockpile laboratory test SLUMPYfuel slumping (computers) SLWPGSenior-Level Weapon Protection Group SLYPsolving last years problems Smsamarium (chemical symbol) SM1. status messages 2. standard missile (Navy) S&Msurveillance and maintenance

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SMACshipment mobility accountability collection SMART1. sequential modular architecture for robotics and telecommunication 2. safety, maintenance, and repair team SMARTSSandia modular advanced reconfigurable telemetry system SMARTWELDcomputerized system for rapid-response manufacturing SMASswitched maintenance access system SMC1. system monitor and control SMCLsecondary maximum contaminant level SMCMsea mine countermeasures SMCRASurface Mine Control and Reclamation Act (1977) SMCSsurveillance monitoring and control subsystem SMCTFSolar Materials and Components Test Facility SMDsurface mount device SMDCsupervisors management development course SME1. Society of Manufacturing Engineers 2. subject matter expert SMERFSmoke Emission Reduction Facility SMESsuperconducting magnetic energy storage SMFASsimplified modular frame assignment system SMGsubmachine guns

SMI1. salary merit increase 2. static memory interface (microprocessors) SMLMSoviet Military Liaison Mission SMMPSpecial Microelectronics Master's Program SMOSample Management Office SMOASuperfund Memorandum of Agreement SMOLstrained-metal overlayers SMOOPIshadow moiré out-of-plane interferometric (damage detector) SMP1. software management program 2. site management plan 3. special master's program SMPC1. specialty metals processing consortium 2. switch-mode power converters SMRSFspecial moment resisting space frame SMSsite management system SMTP or smtpsimple mail transfer protocol SMTSsenior member of technical staff SMU1. Strategic Management Unit 2. source measure unit SMUGSandia Macintosh Users' Group snsensor S/N or SN1. signal to noise 2. stock number 3. serial number SNAsystems network architecture SNAFUsituation normal, all fouled up SNAP1. systems for nuclear auxiliary power 2. safeguards network analysis procedure

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SNECSubgroup on Nuclear Export Coordination SNFshort-range nuclear force SNIPERsubnanosecond impulse radiator SNLWhen referring to a specific Sandia location, use the formal (Sandia National Laboratories), informal (Sandia), or acronym (SNL) name as appropriate, with the state name following, separated by a slash. Examples: 1. Sandia National Laboratories/New Mexico is the site of PBFA II. 2. The Combustion Re-search Facility at Sandia/California develops and applies new research tools to problems in combustion research. Note: For internal audiences and others familiar with Sandia, the short forms Sandia/NM and Sandia/CA may be used. Facilities may also be referred to as the California laboratory and the New Mexico laboratory. Sandia Corporation is the official corporate name. Use it in legal and official documents, contracts, or leases. SNLESCSNL Electrical Safety Committee SNM1. strategic nuclear material 2. special nuclear material SNMERCSoutheast New Mexico Education Resource Center SNOBOLstring oriented symbolic language (A computer language developed by Bell Labs.) SNORTsupersonic naval ordnance research track SNOS1. silicon nitrate oxide semiconductor 2. silicon nitride oxide silicon SNR1. sodium-cooled nuclear reactor 2. signal-to-noise ratio SNSSandia notification system

SNTPspace nuclear thermal propulsion (or program) SNUsolar neutrino unit SNUPPSstandardized nuclear unit power plant system SOspecial order SOAsystems ordering agreement SOARSpace Operations and Applications Research SOC1. synthetic organic compound 2. security overpack container 3. security operations computer SOCOMspecial operations command SODASSandia optical disk archival system SOFSpecial Operations Forces SOFPARSSpecial Operations Forces planning and rehearsal system SOHstate of health SOIsilicon-on-insulator solsoluble sol-gelsolution gelation SO/LICspecial operations/low intensity conflict solnsolution SOMNETSandia (Labs) open mail network SOMSSandia octahedral molecular sieves sonarsound navigation and ranging SOP1. Standard Operating Procedure (ES&H) 2. Safe Operating Procedure (ES&H) 3. standard operating power

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SOR1. specific operational requirement 2. service order request SORVstuck open relief valve SOS1. silicon-on-sapphire (memory) 2. self-optimized sector (a code) SOTASstandoff target acquisition system SOTFsecurity operations training facility SOUTHCOMSouthern Command SOW1. statement of work 2. standoff weapon sp1. special 2. Specific SP1. sparkplug 2. standard procedure S&Psynthesis and processing sp actspecific activity SPADATspace detection and tracking SPADISSpace Defense information system SPADOCSpace Defense Operations Center SPC1. statistical process control 2. switching power combiner SPCCspill prevention controls and countermeasures. SPCDSsmall permanent communications and display segment SPDsummary plan description SPDSsafety performance data system SPDTsingle pole, double throw (electrical switch) specspecification

SPECTsingle photon emission computerized tomography SPETsNAZAmerican Translation: Soviet Special Forces SPFEspecial projects flight experiment SPGsingle-point ground sp grspecific gravity sp htspecific heat SPIsecurity profile inspection (computers) SPICserial/parallel/interrupt controller (card) SPICEa program for electronic circuit analysis SPIESociety of Photo-Optical Instrumentation Engineers SPINSoftware Process Improvement Network SPIRshort perimeter intrusion radar SPIRITSspectral and in-band radiometric imaging of targets and scenes SPL1. sound pressure level 2. semiconductor packaging laboratory 3. self-propelled launcher 4. spare parts list 5. silent-power limited SPLTSspecial private line telephone system SPMsystem prioritization method SPMS1. safety performance measurement system 2. strategic planning and management system SPMTsmall project management team SPNstop-production notice

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SPO1. security police officer 2. Special Projects Office (Navy) SPOTSatellite pour l'Observation de la Terre SPPstandard practice procedure SPR1. Sandia Pulsed Reactor 2. strategic petroleum reserve SPRINTsub-program (manager) integration team sps or SPSsamples per second SPS1. sun-present sensor 2. safety precedence sequence 3. simplified processing station 4. sample protection system SPSEsavings plan for salaried employees SPSTsingle pole, single throw (electrical switch) SPTsignal processor and timer SPURspace power unit reactor SPVsmall projectile vault sp volspecific volume sqsquare (use of the superscript 2 is preferred) SQAsoftware quality assurance SQC1. Sandia Quality Council (obsolete; use SQLC) 2. statistical quality control SQFsubjective quality factor SQITSandia quality improvement team SQLstructured query language SQLCSandia Quality Leadership Council (or Committee) (replaces SEC, SMC, and SQC)

SQL/DSstructured query language/data system SQPCSecretarial Quality Process Council (or Committee) SQSCSandia Quality Steering Council (or Committee). SQWsingle quantum well SQWFETstrained quantum well, field-effect transistor srsteradian (solid angle) Srstrontium (chemical symbol) SR1. supplemental requirements 2. software requirements 3. slant range 4. suppressed radiation 5. Steel Room 6. Savannah River (Operations Office/DOE) S&Rshipping and receiving S/Rsafety/relief SRA1. Sandia recognition award 2. special recognition award SRAM1. short-range attack missile 2. static random-access memory SRAM-Tshort-range attack missile, tactical SRBsolid-fuel rocket booster SRBMshort-range ballistic missile SRC1. sample recovery canister 2. space response cell 3. Semiconductor Research Corporation 4. Semiconductor Research Council 5. Safety Review Committee SRCSCSandia Radiological and Criticality Safety Committee SRD1. secret restricted data 2. system requirements document

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SREsubsystem research experiment SREMPsource-region electromagnetic pulse SRFSecure Reserve Force SRIStanford Research Institute SRICSemiconductor Research Integration Center SRIDstandards/requirements identification document SRIRsemirigid inspection resin SRISshort-range thermal sight SRLSavannah River Laboratory SRNSandia Restricted Network SRO1. Savannah River Operations (DOE) 2. senior reactor operator SRPSavannah River Plant SRS1. Savannah River Site 2. secure recode system SRSCSandia reactor safety committee SRT1. special response team 2. security response team SR/TRstrategic reconnaissance/tactical reconnaissance SRTSshort-range thermal sight SRV1. surrogate research vehicle 2. small (or single)reentry vehicle 3. safety relief valve SRVSSandia reimbursement and vouchering system SS1. stainless steel 2. special (or system) specification (a drawing prefix)

3. US designator for Soviet surface-to-surface missile 4. sole source 5. stockpile support 6. security/safety (interface) 7. shift supervisor S&Ssafeguards and security (sometimes written as S2) SSA1. senior scientific adviser 2. single stronglink assembly 3. source selection authority SSACSource Selection Advisory Council SSBsingle sideband SSBNNavy designator for its ballistic missile launching nuclear submarine SSC1. Soldier Support Center (Army) 2. structures, systems, and components 3. scientific support contractor 4. superfund state contract SSCCSite Security Control Center SSCR1. system software change request 2. senior Sandia contracting representative SSD1. steady-state distribution 2. solid-state storage device 3. safety, security, and dismantlement SSDAsynchronous serial data adapter SSDC1. Site Security Defense Center 2. Safety System Department Center (DOE) SSDPMSandia software development process management SSEBSource Selection Evaluation Board sSFstandard saybolt fural SSF1. Service Storage Facility 2. saybolt seconds fural SSFCSelf-Service Finance Center

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SSFI1. safety system functional inspection 2. Scaffolding, Shoring, and Forming Institute S2SGSurvivability and Security Steering (and Working) Group SSI1. ship's system instrumentation 2. small-scale integrated SSIDsupplemental structural inspection document SSL1. secondary standards laboratories 2. Sandia Standards Laboratory SSM1. secure storage modules 2. single side-band modulation 3. solid-state memory 4. surface-to-surface missile SS/Msole source/make (for procurements greater than $25,000.) SSN1. shape-stable nosetip 2. social security number 3. secure supercomputing networking (or network) (SNL) SSNMstrategic special nuclear material SSOsource selection officer SSOMIsafety system outage modification inspection SSP1. Stockpile Stewardship Plan 2. Savings and Security Plan 3. Schedule Strike Plan SSPOStrategic Systems Project Office SSPSsolid state protection system SSR1. solid-state relays 2. safe-secure railcar 3. stockpile surveillance reliability SSRSSTRATCOM secure recode system SSS1. safe shutdown system 2. supplementary safety system 3. Systems Science and Software (Company)

SSSASoil Science Society of America SST1. safe-secure trailer (or transport) 2. single-shell tank SSTBSalton Sea Test Base SSTSspace surveillance and tracking system SSTTPsafeguards system test target program (missile launching) sSustandard saybolt, universal SSU1. saybolt seconds, universal 2. security system upgrade SSVsimplified storage vault Ststoke (use m3s kinematic viscosity) ST1. space (and missile) technology 2. Sandia traveler 3. superconducting transmission S&Tsystems and technology S&TAScience and Technology Alliance STA1. Secure Transportation Asset 2. shift technical advisor STACstemming anchor closure STACSstrategic and theater (tactical) advanced communications study STADANspace tracking and data acquisition network stalostable local oscillator STANAGStandardization Agreement (NATO) STAR1. shock thermodynamics applied re-search 2. shock technology applied research STARBASEsecurity tracking and response base

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STARFIXsatellite timing and ranging fix STARLOCSandia target location computer STARSstrategic target system STARTStrategic Arms Reduction Treaty STASsafe-to-arm signal stat- Prefix indicating an electrical unit in electrostatic centimeter-gram-second system of units; SI recommends discontinuing the term. STC1. Society for Technical Communication 2. seismic target classifier STCSshort-term compliance statement stdstandard STEsystem test equipment STEDsolar turboelectric drive STELshort-term exposure level STEMscanning transmission electron microscope STEP1. solar total energy project 2. stockpile transition enabling program 3. standard for the exchange of product (model data) 4. standardization enabling project (or program) STEPSSandia text editing and photosetting system STF1. safety test facility 2. systems test facility STI1. scientific and technical information 2. surveillance test interval ST&Isecurity theme and implementation STLSimulation Technology Laboratory

STM1. secure transport module 2. scanning, tunneling microscope 3. stirling thermal motors 4. scientifically tailored materials stack tritium monitor STMBMSsimultaneous thermogravimetric modulated beam mass spectrometry STMPOsolar ten-megawatt project office S&TNFstrategic and theater nuclear forces STNGsealed tube neutron generator STOCSpecial Technical Operations Center STOLshort takeoff or landing STOLSsurface towed ordnance locator system STOPsafety training observation program STOVLshort takeoff or vertical landing STP1. system test plan 2. standard temperature and pressure 3. special technologies program 4. software test plan 5. surety technology program 6. software through pictures STPPstandard truncated pyramid pillar STRsoftware trouble report STRACStrategic Army Corps STRATCOM1. Strategic Communications 2. Strategic Command STRAWstructural analysis of subassembly wrappers (computers) STREPSystem Technology Reentry Experiments Program (Army) STRESSstructural engineering system solver (computers) STRICOMStrike Command

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STS1. stockpile-to-target sequence 2. standard threshold shift 3. safeguards transportation system STSCsecure transportation and storage container STTFSolar Thermal Test Facility (now the National Solar Thermal Test Facility) STTRsmall-business technology transfer STU1. scientific test unit 2. special test unit 3. seismic test unit 4. secure telephone unit STXsensor transmitter SUCIsensitive use control information SUMSoftware Users Manual SUMMERSandia unmanned mobile-machine experimentation range SUMMiTSandia Ultraplanar Multilvel MEMS Technology SUNMOSSandia/University of New Mexico operating system SUPAsubmicron particle analyzer SUPERscience understanding promotes environmental responsibility SURFsystem utilization reaction factor SURPSandia university research program SUWCOSewer Use and Wastewater Control Ordnance svsievert (J kg-1; formerly rem) SV1. space vehicle 2. secure voice 3. standoff vulnerability 4. shear vertical SVCspecial verification commission

SVCNsecure video conferencing network SVDISandia virtual device interface SVIASpecialty Vehicle Institute of America SVISSandia Voice Information System SVLSecure Voice Link SVLSsubmarine vertical launch system SVMSSandia voice messaging system SVNsecure voice network SVTsystem verification test SW1. shortwave 2. shallow water SWAPstress wave analysis program SWAPSsecretarial, writing, and professional standards SWAT1. special weapons and tactics 2. sum of weighted accelerations technique 3. solid waste assessment test SWDASolid Waste Disposal Act SWESociety of Women Engineers SWECStone and Webster Engineering Corporation SWERVESandia winged energetic reentry vehicle SWF1. Strategic Weapon Facility 2. stress-wave factor SWFLANTStrategic Weapon Facility, Atlantic SWFPACStrategic Weapon Facility, Pacific SWGseabed working group SWGASandia Womens Golf Association

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SWHAS1. Sandia workplace hazards awareness system 2. Sandia workplace hazards awareness signs SWIFTIIa computer code SWIMspecial weapon inventory management SWIRCSouthwest Information and Research Center SWITSsolid waste information tracking system SWMCSNL Waste Management Council SWMCMshallow water mine countermeasures SWMUsolid waste management unit SWOESmart Weapons Operability Enhancement SWOGSpecial Weapons Overflight Guide SWOP1. Southwest Organizing Project 2. special weapons ordnance publication SWORDSandia wafer-level software for reliable devices SWOTstrengths, weaknesses, opportunities, and threats SWP1. safe work permit 2. safe work procedure(s) SWRstanding wave ratio SWRDsystem for weapon rapid deployment SWS1. salt water system 2. service water system SW/RSstop work/restart SWSAsolid waste storage area

SWTPsecretarial work training program SXspace experiments SXRspecial exception release SXRPstellar x-ray polarimeter SXRspecial exception release SYNFsynthetic (gaseous and liquid) fuels SYNROCsynthetic rock SYSCONsystems control SYSINsystem input (computers) SYSOPsystems operator

T t1. triton (the nucleus of tritium) 2. temperature in Celsius; sometimes written as T T-tera- (a prefix indicating 1012) T1. tesla (magnetic flux density) 2. temperature 3. transmission 4. tritium (chemical symbol) 5. Trident (as in Trident II) 6. thermal 7. temporary Ta antenna noise temperature Tatantalum (chemical symbol) TA1. transverse acoustic 2. test apparatus 3. technical associate 4. travel authorization 5. technical area 6. test authorization TABMtactical antiballistic missile system TAC1. Tactical Air Command (The AirCombat Command has now combined the

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former TAC and the former SAC into one command.) 2. toxic air contaminant TACAMOtake charge and move out TACCTactical Air Control Center TACCAutoTactical Air Command and Control (USAF automated system) TACFIREUS Army automated tactical system for artillery fire direction TACMtotal automatic control module TACOMTank Automotive Command (Army) TACPTactical Air Control Parties TADPTechnology Assessment Development Plan TADStechnician automated diagnostic system TAFIGTactical Forces interoperability group TAFIISTactical Air Force integrated information system TAGtechnical assistance grant TAGStext and graphics support TALCtactical laser communications TALMtemperature alarm monitor TALOtime after liftoff TAMMBAthermoanalyzer modulated molecular beam apparatus tantangent tanhhyperbolic tangent

TAOStechnology for autonomous operational survivability TAP1. unit of impulse (1 dyne-s/cm2) 2. Training Accreditation Program (DOE) 3. technical assistance program 4. toxic air pollutant 5. tuition-assistance program TAPS1. tunnel and pipe system 2. tunnel and pipe seal TARCtransportation accident resistant container TATBtriaminotrinitrobenzene TAWCTactical Air War Center Tbterbium (chemical symbol) T&Btop and bottom TBC1. Testbed concentrator (related to solar) 2. To be considered 3. testbed container TBDto be determined TBEtotal binding energy TBI1. text-based instruction 2. through bulkhead igniter Tctechnetium (chemical symbol) TC1. Thermocouple 2. test component 3. tools component 4. training and certification T&Cterms and conditions TCAtrichloroacetic acid T&Cterms and conditions TCATStarget cueing and tracking system TCCTechnical Control Center TCCCTranseaver Central Control Center

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TCDtrouble call desk TCEtrichloroethylene TCF1. Technical Control Facility 2. trillion cubic feet TCG1. track control group 2. technical coordinating group 3. topical classification guide TCItechnology commercialization initiative TCLPtoxicity characteristic leaching procedure TCMCTechnical Communications Management Council TCNTtranspiration-cooled nosetip TCOtechnology commercialization office TCPCtechnical communications products group TCP/IPtransmission control protocol/interest protocol TCRCTechnical Classification Review Committee TCREPTechnical Counters and Response Experimental Program TCUtag controller unit TD1. theoretical density (sometimes written as Td) 2. timer driver 3. technology development 4. time delay TDBItest during burn-in TDDtarget device detection TDDLtime division data link TDF1. Turbulent diffusion flame 2. Target Development Facility

TDI1. target data inventory 2. time-delayed integration 3. toluene di-isocyanate TDLRtraining device letter requirement TDMtime division multiplexing TDMAtime division multiple access TDP1. targets development program 2. technical drawing package TDRtraining device requirement TDREtransmit data register empty TDS1. transporter detection system 2. tamper detection system 3. Textron Defense Systems (Wilmington, MA) 4. test definition sub-system TDTCTest, Development, and Training Center TDYtemporary duty Tetellurium (chemical symbol) TE1. transverse electric 2. thermoelectric 3. terminal equipment TEARStank effect augmentation by remote subsystems TEC1. total electron content 2. total estimated cost TECTUTomahawk electrical compatibility test unit TEDCGtest equipment design coordination group TEDEtotal effective dose equivalent TEF1 Test and Evaluation Facility 2. Tritium Extraction Facility TEGtest and evaluation group

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TELtransporter-erector launcher TELERtelecommunications requirements TELNETtelecommunications network TEM1. transverse electromagnetic (wave) 2. transmission electron microscopy temptemperature TEQtest equipment qualification TERAterminal effects research and analysis TERCOMterrain contour matching; sometimes written TERCONTM TERSEterminal reporting system TES1. thermal energy storage 2. technical enforcement services TESStactical engagement simulation system TESSTAthermal energy storage for solar thermal applications TEVESthermal enhanced (soil) vapor extraction system TEXTelex TFDtactical fusion division TFDDthermal/flash protective device TFEtrifluoroethylene TFMthin-film membrane TFNthe proper acronym for thick (film) network is TKN TFPtraffic facility practices TFPDthermal/flash protective device TFSterminal fix system

TFSFthin film secure facility TFTthin-film transistor TFTRTokamak Fusion Test Reactor (Princeton's Plasma Physics Laboratory) TFWTactical Fighter Wing TGAthermogravimetric analysis TGEStask group on electrical safety TGPtwo-gimbal platform Ththorium (chemical symbol) THtelemetry head THB1. test head battery 2. test head B THERPtechnique for human error rate prediction THIStrouble-handling information system thkthick thmtherm (British unit of temperature) THM1. terminal homing munitions 2. tri-halomethane 3Dthree dimensional THREXthreshold experiment THTtransient heat transfer TI1. Texas Instruments 2. transport index TIATelecommunications Industries Association TIADSTonopah Integrated Air Defense System TICTechnical Information Center (Oak Ridge); TIC is now obsolete; see OSTI

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TID1. traveling ionospheric disturbances 2. tamper-indicating device TIDBITSES&H training information database TIDStechnical information distribution system TIE1. technical institute equivalency (program) 2. technical information exchange TIE-Intechnology information environment for industry TIGtungsten inert gas TIM1. target insertion mechanism 2. technical interchange meeting TIMStechnical information monitoring system TIOtechnical integration office TIP1. transaction interface package 2. Tokamak improvement program 3. thulium isotope power TIPStotal improvement process system (visitor access) TIQLRteamwork, integrity, quality, leader-ship, and respect TIRtotal indicated runout TIRCtechnical information resource consultant TIS1. technical information specialist 2. technical information service 3. Telephone Intercept System TIU1. transducer interface unit 2. tag interface unit TKtemperature Kelvin (see K)

TkN or TKNthick (film) network TLtransmission level T2Ltransistor-transistor logic; use TTL instead TLAtime loss analysis TLAMTomahawk land-attack missile TLAM-CTomahawk land-attack missile, conventional TLAM-NTomahawk land-attack missile, nuclear TLCCthin line connectivity capability TLD1. thermoluminescence dosimeter 2. threshold lung damage TLDEtheater launch detection experiment TLEtarget-location error TLItreaty-limited item TLTAtwo-loop test apparatus TLVthreshold limit value TLXshort for TELEX TM1. tone modulation 2. transverse magnetic 3. technology manager 4. telemetry 5. technical manual 6. thematic mapper T&Mtime and material TMABtetramethylammonium borohydride TMACToxic Materials Advisory Committee TMAP1. teleoperated mobile anti-armor platform 2. tactical multipurpose automated platform TMDtheater missile defense

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TMDEtest, measurement, and diagnostic equipment TMIThree-Mile Island TMPtechnology maturation program TMS1. The Metals Society 2. tool-made sample (QA) 3. technical marketing specialist TMSStelemanaged (or teleoperated) mobile security station (pronounced "Thomas") TNtemperature (noise) TN1. thermonuclear 2. test monitor TNAthermoneutron activation TNAZtrinitroazetidine TNCHPtrizacycloheptune TNFtactical nuclear forces; theater nuclear forces TNFC3STheater Nuclear Forces Command, Control, and Communication System TNNWTreaty on Nonproliferation of Nuclear Weapons TNSAtechnical nuclear surety (or safety) analysis TNTtrinitrotoluene (explosive) TO1. transverse optic 2. technical order (sometimes written as T.O.) TOAtime of arrival TOC1. Test Operation Center 2. Technical Operations Center 3. total organic carbon (or compound) TOFtime of flight

TOFFTransient Overpower Fuel-Element Failure (computers) TOFMStime of flight mass-spectrometry (or spectrometer) TOGtechnical oversight group toltolerance TOMStotal ozone mapping spectrometer TOOtargets of opportunity TOP1. technical operating plan 2. transient overpower (accident) 3. total obscuring power (measure of smoke screening) 4. traffic operating procedure 5. Triple Option Plan TOPSteacher opportunities to promote science TOS1. tactical operations system 2. transportation options study TOSItechnical on-site inspection TOSMtransceiver on-site multiplexer TOUGHtransport of unsaturated groundwater and heat TOVteleoperated vehicle TOWtime of work TPtechnical publication TPA1. terephthalic acid 2. tri-party agreement 3. terminal processing assembly TPC1. transaction processing center 2. temporary procedure change TPDtemperature programmed desorption TPICKTelecommunications Plan for the Improving of Communications in Korea

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TPLtransient protection limit TPQthreshold planning quantity TPRterrain profile recorder (also known as airborne profile recorder, or APR) TPS1. thermal power system 2. tamper-protected sensors 3. transactions per second TPUtext processing utility TPVthermophotovoltaic TPX1. tokamak physics experiment 2. polymethylpentene TQGtactical quiet generator TQMtotal quality management trtrace TRtrainer TRA1. test reactor area 2. teacher research associate TRACtransient reactor analysis code TRACEtamper-resistant authenticated camera enclosure TRADEtraining resources and data exchange TRADOCTraining and Doctrine Command (US Army) TRAMtransient multiplexer TRANSWRAPtransient sodium water reaction analysis program (computers) TRAPPtransient response to applied pressure pulses (computers) TRCtotal recordable case TREATTransient Reactor Test Facility

TREDtechnology for regional-based economic development TREEtransient radiation effects in electronics TREXthermally reactive elastic-plastic explosive TRI1. Tech Reps, Inc. 2. toxic release inventory TrIPtransient ignition phenomena TRISPtime-resolved infrared spectral photography TRITACTri-Service Joint Tactical Communications Office TRLTritium Research Laboratory TRL/SRCTritium Research Laboratory/Safety Review Committee TROKAThird Republic of Korea Army TRPtechnology reinvestment project TRS1. text recognition system 2. telemetry receiving station TRSStactical remote sensor system TRU1. transuranic 2. total resource utilization TRUEXtransuranic extraction TRUPACTtransuranic package transporter TRVtactical robotic vehicle TRWThompson, Ramo, Wooldridge (Corporation) TS1. technical support 2. target strength 3. top secret 4. technical specification 5. toxic substance

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TSA1. technical staff associate 2. technical safety appraisal TSAMtri-service standoff attack missile TSARterminal special-access request TSC1. touch screen control 2. triple standard concertina 3. Technology Support Center TSCAToxic Substances Control Act TSCCTechnical Support Coordinating Committee TSCM1. technical security countermeasure 2. temperature scram circuit monitor TSCOtop secret control officer TSD1. treatment, storage, and disposal 2. technical system design 3. technology for safe driving TSDFtreatment, storage, and disposal facility TSEtest support equipment TSERtransportation safety evaluation report TSESTransiberian Express Service TSGtelephone security group TSLStrajectory stronglink switch TSMTransportation Safety Manual TSNterminal switching network TSOtime-sharing option TSP1. traffic service position 2. total suspended particulates 3. transportation/ storage program 4. testbed setup program

TSPItime-space position information TSR1. thermostructural response 2. technical safety requirement TSRStactical secure recode system TSS1. transportation security system 2. total suspended solid TSSG1. trajectory-sensing signal generator 2. transportation study steering group TSSPtrajectory sensing signal processor TSSPEtrajectory sensing signal processor enable TSTSTomahawk system test set TTA1. tube-transformer assemblies 2. Tiger Team assessment TTAPTiger Team Action Plan TTB1. tank testbed 2. target technology base TTBTThreshold Test Ban Treaty TTCTechnology Transfer Center TT&Ctechnology transfer and commercialization TTFthermal treatment facility TTGMTiger Team Guidance Manual TTItechnology transfer initiative TTIMTACOM thermal image model TTLtransistor-to-transistor logic TTLDTeflon thermoluminescent dosimeter TTMtwo-tone modulation TTOtotal toxic organics

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TTR1. Tonopah Test Range 2. time to repair TTS1. time-transfer system 2. temporary threshold shift TTVtest target vehicle TTY1. teletype 2. teletypewriter Tutuballoy TU-ARTtwin universal asynchronous receiver/transmitter TUDEterminal user data entry TULtime until launch TUQStrajectory unique signal TVATennessee Valley Authority TVATPtactical vulnerability assessment training program TVCTechnology Ventures Corporation TVItelevision interference TVLtenth value larger Tw or TwadTwaddell (a unit of specific gravity on the Twaddell scale) TWterawatt (trillion watts) TWAtime-weighted average TWAAtactical warning attack assessment TWCSTomahawk Weapon Control System TWFtransuranic waste facility TWNPtape-wound nylon phenolic 2Dtwo dimensional

TWO-DFFTtwo-dimensional fast Fourier transform (see DFFT) TWP1. transuranic waste program 2. tactical warfare program TWPGTrident Warhead Project Group (US/UK) TWSTomahawk Weapon System TWT1. traveling-wave tube 2. transonic wind tunnel TWTSFtransuranic waste treatment and storage facility TWXteletypewriter exchange (service)

U uatomic mass unit (unified) mAmicroamps) UARTuniversal asynchronous receiver/transmitter UAVunmanned aerial vehicle U-AVLISuranium-atomic vapor laser isotope separation UBCUniform Building Code) UBITRONundulating beam interaction electron (tube) UCuse control U&Cusual and customary UCAIunclassified controlled access information

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UCBTuncollimated Compton backscattering tomography UCCuse control characteristics UCCATSurban combat computer-assisted training system UCC/NDUnion Carbide Corporation/Nuclear Division ucg or UCGunderground coal gasification UCLupper control limit UCNIunclassified controlled nuclear information UCP1. Universal Construction Package 2. Unified Command Plan 3. uranium calibration pit UCPOGuse-control project officer's group UCS1. unclassified computer software 2. Union of Concerned Scientists UDETSSunderwater deterrent security system UDLuse denial lock UDTunderwater demolition team UELupper explosive limit UESCUnited Energy Services Corporation UF1. Upward Feedback 2. University of Florida UFASUniform Federal Accessibility Standards UFCUniform Fire Code UFFCSultrasonics, ferroelectrics, and frequency control society UFLupper flammable limit

UFSARupdated final safety analysis report UGunderground UGSunattended ground sensor UGSWunattended ground sensor workstation UGTunderground test UGVunmanned ground vehicle UHDLunified hardware description language (computers) UHF or uhfultra-high frequency UHIupper-head injection UHLCADSultra-high-level container airdrop system UHVultra-high voltage U/Iurban-industrial UIC1. user identification code 2. underground injection control UISuser interface simulation UJTunijunction transistor UKUnited Kingdom UKAEAUnited Kingdom Atomic Energy Authority ULUnderwriters Laboratories, Inc. ULFultra-low frequency ULSIultra-large-scale integrated UMS1. ultrasonic motion sensor 2. universal maintenance standards UNAAFUnified Action Armed Forces

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UNC1. unified national coarse (holes) 2. United Nuclear Corporation UNCAIunclassified noncontrolled access information UNICCAPuniversal cable circuit analysis program (computers) UNIXa computer operating system developed at Bell Labs UNSCOMUnited Nations Special Commission UMTuranium mill tailings UMTCAUranium Mill Tailings Control Act (1978) UNunsatisfactory UNOUnited Nations Organization UO2uranium dioxide UOPFormerly Universal Oil Products; now a joint venture company of Union Carbide and Allied Signal UORunusual occurrence report UPCuniversal PAL controller UPECUniversity Programs Education Committee UPHunderground pumped hydro UPI1. United Press International 2. Unidynamics/Phoenix, Inc. UPSuninterruptible power supply UPTuniversity part-time UQSunique signal URunsatisfactory report

URAuniformly redundant array URSUHF ranging system US1. United States (often written as U.S.) 2. Ultrasonic U&Sunified and specified USA1. United States Army 2. United States of America 3. United Space Alliance USAAGUS Army artillery group USABCUS Advanced Battery Consortium USADUS Agency for International Development USADCUS Army Defense Command USAFUnited States Air Force USAFADUS Army Field Artillery Detachment USAFEUS Air Force, Europe USAKAUS Army Kwajalein Atoll USAREURUS Army, Europe USARTuniversal synchronous/asynchronous receiver/transmitter USARVUS Army in Vietnam USASDCUS Army Strategic Defense Command USASIUSA Standards Institute (replaces ASA) USASOCUS Army Special Operations Command USATHAMAUS Army Toxic and Hazardous Materials (Center)

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USCARUS Council for Automotive Research (research consortium formed by Ford Motor Company, Chrysler Corp., and General Motors Co.) USCGUS Coast Guard USCINCEURUS Commander-in-Chief, Europe (NATO) USCINCPACUS Commander-in-Chief, Pacific Command USCINCSOUS Commander-in-Chief, Southern Command (NATO) USCOMDOMREPUS Commander, Dominican Republic USDAUS Department of Agriculture; unique signal device assembly USDOEUS Department of Energy USDREUnder Secretary of Defense for Research and Engineering USDSDultrasonic seal data storage device USDWunderground sources of drinking water USECREUS Export Council for Renewable Energy USEUCOMUS European Command USFKUS Forces in Korea USFWSUS Fish and Wildlife Service USG1. US Government 2. unique signal generator (or generation) USGCRPUS Global Change Research Program USGSUS Geological Survey USHuniversal sleeve housing

USICUS Industry Coalition USJVPUtility Scale Joint-Venture Project USMBUS Metric Board USMCUS Marine Corps USNUS Navy USNC/RMUS National Committee for Rock Mechanics USOPunique signal override plug USQunreviewed safety question USRADSultrasonic ranging and data system USRDultrasonic seal reading head USSUnited States ship USSANUS Security Affairs NATO USSIOPUS single integrated operational plan USSPACE(COM/NORADUS Space Command/North American Air Defense USSRUnion of the Soviet Socialist Republics (see NIS and FSU) UST1. unique signal train 2. underground storage tank UTultrasonic testing UTAUniversity of Texas at Austin UTCuniversal time coordinated UTMCUnited Technologies Microelectronics Center UTRCUnited Technologies Research Center UUultimate user

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UUTUnit Under Test UV1. ultraviolet 2. undervoltage UVASERultraviolet amplification by stimulated emission of radiation UV-LIDARultraviolet light detection and ranging UV-Visultraviolet visible UWBultra-wide band UXOunexploded ordnance

V v1. vibration 2. velocity V1. vanadium (chemical symbol) 2. volt VA1. Volt ampere 2. vulnerability assessment vacvacuum VAC1. Vacuum Atmospheric Company; (Hawthorne, CA) 2. volts, alternating current (see VDC) 3. vacuum VACSvoice activated control system VAFBVandenberg Air Force Base VAISvisually artificial intelligent surveillance VAMvibration and acoustic monitoring VAMSvisits and assignments management system VANAvector automatic network analysis (or analyzer)

VArvolt-ampere reactive VAR1. visual-aural range 2. vacuum-arc-remelt VATvertical access tower VAWTvertical-axis wind turbine VAXvirtual address extension VB/TWSSvehicle barrier/taut-wire sensor system VCverification chamber VCCvoice conferencing console VCEvinyl copolymer ethylene VCMvoluntary corrective measure(s) VCO1. voltage-controlled oscillator 2. virtual cathode oscillator VCP1. volunteer contribution plan 2. verifiable control procedures 3. verifiable completion process 4. vitrified clay pipe VCRvideocassette recorder VCSELvertical-cavity surface-emitting laser V&CTverification and control technology VDC1. volts, direct current (see VAC) 2. volts direct current VDFGvariable diode function generator VDI1. video disk interactive (computers) 2. virtual device interface VDTvideo display terminal Veexhaust velocity (expressed in m/s) VEvisoelastic (materials)

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VECvariable explosive chamber VENUScomputer code superseding MARS code for disassembly analysis vf or VFvideo frequency VFAvibration fly around VFOvariable frequency oscillator VFPvariance frequency processor VGA1. video graphics array 2. video graphics adapter 3. voluntary group accident (insurance) VHvelocity (or validation) head V&Hvulnerability and hardening VHAP volatile hazardous air pollutant VHDLVHSIC hardware description language VHF or vhfvery high frequency Vholdupholdup capacitor voltage VHSICvery high speed integrated circuit VHTvery high temperature VIAvolunteers in action VIEWSvirtual interactive environment work space VIP1. visual information projection 2. vital issue process 3. video imaging projectile 4. very important person VISARvelocity interferometer system for any reflector VISDTAvideo imaging system for detection, tracking, and assessment

VISTAvery intelligent surveillance and target acquisition VITAvolunteers in technical assistance Viterbiredundancy for error checking VIUVME I/F unit viz.videlicet; namely VKAvolatile keying assembly VLBIvery low baseline interferometry vlf or VLFvery low frequency VLFvery low flow VL&Hvulnerability, lethality, and hardening VLOSvertical line of sight VLRvery long range VLSvertical launching system VLSIvery large scale integration VM1. velocity modulation 2. voltmeter 3. virtual machine V/mvolts per meter VMDvideo motion detection VMEversa-module, Europe VMSvirtual memory system VMSELVirtual Manufacturing and Synthetic Environment Laboratory (SNL) VNIIATranslation: All-Russian Scientific Research Institute of Automatics VNIRvery near infrared

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VNIEF(also known as Arzamas-16) Translation: Russian nuclear weapons laboratory (can be considered a combination of Los Alamos National Laboratory and Sandia National Laboratories) VNITFTranslation: Russian Federal Nuclear Center v/ovolume/percent VOCvolatile organic compounds V/ODvoice/open data volvolume VOMvolt-ohm milliammeter VORVHF omni range VP1. video processor 2. vault processor 3. vice president 4. vapor pressure Vppinchoff voltage VPICRussian acronym for Soviet Military Industrial Commission VRvirtual reality VRCIVariable Resistive Components Institute VREvibrating reed electrometer VRFVisual Recording Facility VRISvault remote inventory system VRLAvalve regulated lead-acid (batteries) VRTWGverification research technology working group vs.versus VSvery survivable VSBvestigial sideband

VSIvisual site inspection VSISVault Safety and Inventory System VSMvestigial sideband modulation V-SMOWVienna standard mean ocean water VSSvideo storage system VSTOLvertical/short takeoff and landing (aircraft) VSU1. voice synthesizer unit 2. video surveillance unit VSWvery shallow water VSWRvoltage standing-wave ratio VTvacuum tube VTEvirtual test environment VTERMvirtual terminal VTLvoluntary term life VTOLvertical takeoff and landing VTPPVerification Test Plan and Procedures VTR1. video tape recorder 2. vault-type room VTSvertical tube storage VTVMvacuum tube voltmeter, used now only on old equipment; use EVM for electronic voltmeter VTWSvertical taut-wire sensor VTZFvariable threshold zonal filter vuvolume unit VUveeder unit

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Vu-graphinformal spelling of viewgraph VUAvirtual user address VUVvacuum ultraviolet V&Vvalidation and verification VVTvariable valve timing

W W1. watts 2. wolfram (or tungsten) (chemical symbol) 3. warhead WAwork authorization WAC1. weapons allocation committee 2. weapons advisory committee 3. weapons activity committee WACCwaste acceptance criteria committee WADSweapons access delay system (formerly the igloo access delay system) WAFwaste assay facility WAIS1. wide area intrusion (detection) system 2. wide area information server (OSTI) 3. wide area infrared sensor WALIworkstation for the analysis of LISA images WALTwarning assessment logic terminal WALTSwide-angle laser transmitter system WAM1. wide-area mine 2. warhead arming maneuver WANwide-area network WAPweapon appraisal process

W-ARDWestinghouse, Advanced Reactors Division WARSSwide area ramp surveillance system WARTwave action rotary transmission WATCHwireless alarm transmission of container handling WATDRwaste accumulation traveler disposal request WATSwide-area telephone service Wbweber WBCwhole body counter WBCNwide-band communications network (DOE) (Transmission between Production Facilities and the Weapons Labs) WBSwork breakdown structure WCwaste custodian WCDweapon compatibility date WCLWaste Certification Laboratory WCPweapon control panel WCSweapon control system WCSCWorkgroup Computing Service (or Support) Center WCU1. WATCH controller unit 2. weapon control unit WDCRweapon design and cost report WDDwing data disk WDECweapon design, engineering, and certification WDIwatchdog input

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WDLwork days lost WDRweapons development report WDSRweapon development status report WDTwarning display terminal w.e.water equivalent WE1. write enable 2. Western Electric WEATWeb External Architecture Team WECWestinghouse Electric Corporation WeDIDWaste Component Recycle, Treatment, and Disposal Integrated Demonstration WEFWater Environment Federation WEILweapon evaluation test laboratory WERCWaste-Management Education and Research Consortium WERFWaste Experimental Reduction Facility WERPWaste Examination Reduction and Packaging (Facility) WES1. warhead electrical system 2. weapon electrical system 3. Waterways Experiment Station WESFWaste Encapsulation and Storage Facility (Hanford) WESTCOMWestern Command WESTLANTWestern Atlantic Command (NATO) WETLWeapon Evaluation Test Laboratory WF&Awaste, fraud, and abuse WFOwork for others

WFOTDWork for Others Technologies Division (DOE) wgweapon grade WGAWestern Governors Association WGBCwaveguide beyond cutoff wgswater-gas shift WGSworld geodetic system WGSPWestern Gas Sands Project Whwatt hour WHwarhead WHCWestinghouse Hanford Company WHCAWhite House Communications Agency WHIwarhead installation WHOIWoods Hole Oceanographic Institution WH/RVwarhead and/or reentry vehicle WHSwarhead section WHTUwarhead test unit WIMPweakly interacting massive particle WIN1. waste information network 2. womens inreach network WINSwell-based inertial navigation system (now banned) WIPPWaste Isolation Pilot Plant WIRweapon information report WISWWMCCS information system

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WITSwarhead (or weapon) integration test system WITUa weapon identification device WIUweapon interface unit wkweek WL1. Wright Laboratory 2. Weapons Laboratory 3. working level WL/ADWright Laboratories/Armament Directorate WLANTWest Atlantic WLMworking level month WMwaste management WMDwaste-management defense WMICWaste Minimization Implementation Center WMinwaste-minimization WMOAwaste minimization opportunity assessment WMOCwaste management operations committee WMRPwaste-management and regulatory projects WMSwarehouse management system WMTweapons maintenance trailer WNWNINTEL WNINTELWarming Notice: Intelligence (Sources or Methods Involved) w/o1. weight/percent; see wt. % (preferred) 2. without WO1. work order 2. waste operations

WOBwomen-owned (or woman-owned) business WOCWing Operations Center WORMwrite once read many WOTSwork order tracking system WP1. white phosphorus (screening smoke) 2. West Point. 3. Warsaw Pact (now obsolete) 4. word processing (or word processor) WPASwork package authorization system (nonweapons program) WPCWomens Program Committee W/PCwork/passenger car WPIOWIPP Project Integration Office (DOE) wpmwords per minute WPMwork project manager wpnweapon WPPSLweapons production primary standards laboratory WPTWeapon Preload Test WQCwater quality criteria WQCCWater Quality Control Commission wrwreath WR1. war reserve (stockpile of weapons) 2. working receiver (STTF) WRAPwaste receiving and processing plan WRD&Tweapons research, development, and testing

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WREWeapons Research Establishment (UK) WREAFSwaste reduction evaluation at federal site WROweapon retrofit order WROCwaste reduction operations complex wrsweighted residual squared WRTWIPP radioactive test WR&TDweapons research and technology development (program) WS1. weapons system 2. warhead section 3. weapon storage 4. work station 5. worker safety 6. weapon science WS3This systems formal US designation is the Weapon Storage and Security System (AN/FSQ-143-V). Within NATO, the WS3 is called the Weapon Security and Survivability System. WSAweapon storage area WSARGweapon safety assessment and review group WSCweapons security container WSEworksite evaluation WSESRBWeapon System Explosives Safety Review Board WSETweapon systems evaluation test WSIWackenhut Services, Inc. WSLIweapon surety link interface WSMCWestern Space and Missile Center WSMRWhite Sands Missile Range

WSNSOweather service nuclear support office W/srwatt per steradian WSRAWild and Scenic Rivers Act (1968) WSRSWestinghouse Savannah River Site WSRSGweapon system review study group WSS1. weighted sum of squares 2. wide sense stationary WSSBweapon system safety branch WSTwork study trainee W/stwatt per steradian WSVweapons storage vault wtweight WT1. water tight 2. weapons testing wt%weight percent WTDCwaste tank diverter cell WTEwarhead test environment WTOWarsaw Treaty Organization WTSWashington tactical switch WTTVWSMC transponder test van WTVDRussian acronym for Western Theater of Military Operations WWworld war; initial-cap words when used with a number as World War II (WWII) WWCwire-wound calorimeter WWMCCSWorld-Wide Military Command and Control System

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WWVCSWorld-Wide Voice Conferencing System WWWworld-wide web (hyper-text based multimedia environment) WYSIWYGwhat you see is what you get

X Xreactance XCHEMexplosive chemical XDTdelayed detonation (sometimes called sympathetic detonation) XGDSexempt from general declassification schedule XISPSx-ray image scan processing system X-MIBAexternal microbeam analysis X-MPx-multiplexer-processor XNSXerox network system XPSx-ray photoelectron spectroscopy XRD1. x-ray detector; 2. x-ray diode XRLx-ray laser XTLcrystal XTM-LFx-ray tomographic microscope load frame xux-unit (the siegbahn, a unit of length) XUVextreme ultraviolet

Y Yyttrium (chemical symbol) Y-12Oak Ridge Y-12 Plant YAGyttrium aluminum garnet (laser) Ybytterbium (chemical symbol) ydyard YIGYttrium Iron Garnet (laser) YMPYucca Mountain Project YOTyouth opportunity trainee yryear YTDyear to date Y-TermYale terminal emulator

Z Zatomic number ZBZodiac Beauchamp ZEGzero energy growth ZESzero energy state Znzinc (chemical element) ZnSzinc sulfide ZOCzone operations control ZPPRzero power plutonium reactor

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Distribution: 6 MS0619 Creative Arts Department, 12620 1 MS9018 Central Technical Files, 8945-1 2 MS0899 Technical Library, 9616 1 MS0612 Review & Approval Desk, 9612 for DOE/OSTI