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MIL-STD-12D
29 May 1981
SUPERSEDING
l’fIL-sTD-12c
15 June 1968
~lLITARY STAWDARD
ABBREVIATIONFSORUSE ON DRAWIN6S,
AND IN SPECIFICATIONSS,TANDARDSAND
TECHNICALDOCUMENTS
NO DELIVERABLE DATA o
REQUIRED BY THIS DOCUMENT
ORPR
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tfIL-sTD-12D
29 May 1981
l -
DEPARTMENT OF DEFENSE
Washington, D. C. 20301
Abbreviations for use on Drawings, and in Specifications, Standards and Tech-
nical Documents.
MIL-STD-12D
1. This Military Standard is approved for use by all Departments and Agencies
of the Department of Defense.
2. Beneficial comments (recommendations, additions, deletions) and any pertinent
data which may be of use in Inproving this document should be addressed to:
Commander, US Amy Armament Research and Development Coumand, ATTN: DRDAR-TST-S,
Dover, New Jersey 07801, by using the self-addressed Standardization Ikcument
Improvement Proposal (DD Form 1426),appearlng at the end of this document or by
letter.
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MIL-STD-12D
29 WY 1981
Paragraph Page
1 SCOPE ----------------------------- 1
1.1 Scope ----------------.---.0-.--- 1
1.2 Appl1catlon ------------------0-- 1
. 1.2.1 Short words -000----------------- 1
1.2.2 Field of use 0---.0-.0----------- 1
1.2.3 Combining form -.0-.0-0---------- 1
2 REFERENCED DOCUMENTS -------------- 1 l
2.1 General 9------------------------ 1
2.2 Standards -----0-0--------------- 1
2.3 Other publications -------------- 2
3 DEFINITIONS ----------------------- 2
3.1 Abbreviations ------------------- 2
4 GENERAL REQUIREMENTS -------------- 2
4.1 Clarity ------------------------- 2
4.2 Word combinations --------------- 2
4.3 Syntax --.-.0----0--------------- 2
4.4 Capitalization ---0------------.- 2
4.5 Punctuation --------.00---------- 2
4.6 Revised abbreviations ----------- 2
4.7 symbols ------------------------- 3
4.8 Abbreviations used in existing
technical documents ----------- 3
5 DETAIL REQUIREMENTS --------------- 3
5.1 List of terns and their
abbreviations .00------------- - 5
5.2 Cross reference list of
abbreviations 81
$ii
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MIL-STD-12D “
29 my 1981
MXLITARY STANDARD.
ABBREVIATIONS FOR USE ON DRAWINGS, AND IN
SPECIFICATIONS, STANDARDS AND TECHNICAL DOCUMENTS
1. SCOPE
1.1 Scope. The terms and abbreviations in this standard are limited
to those commonly used on drawings~ and in specifications standards?
and technical documents.
1.2 Application. This standard provides a list of abbreviations
authorized for use on drawings, and in specifications, standards, and
other technical documents.
1.2.1 Short words. Abbreviations of words having five or fewer letters
are not included except those established by longstanding practice.
1.2.2 Field of use. Where an abbreviation is intended primarily for a
particular field of application, that field is indicated In parentheses
following the term, eg, fast operate (relay).
1.2.3 Combininq form. Where No abbreviations are listed for the same
word, the first applies to the word used alone, while the one designated
(comb form) is to be used only in combination with abbreviations of other
words to form an abbreviation for a word combination.
w - 2. REFERENCED DOCUMENTS
2.1 General. The issue of the following documents in effect on the date
of invitation for bids form a part of this standard to the extent
specified herein.”
2.2 Standards
ANSI Y1O.3-1968 Quantities Used in Mechanicsof Solids,
Letter Symbols for
~YIO.5-1968 Quantltles Used in Electrical Science and
Electrical Engineering, Letter Symbols for
ANSI Y1O.2O-L975 MathematicalSigns and Symbols for use in
includlng Phys2cal Sciences and Technology
ANSI YIO.20a 197S
ANSI/IEEE STD 260-1978 Letter Symbols for S1 Units, and Certain
Other Units of Measurem-t
ASTM E380-1979 Standard for Metric Practice
:
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MIL-S7’fl-
29 by 1#$!/
2.3 Other publications.
Webster’s Third New International Dictionary, Unabridged.
Copies of listed Industry Association Standards are available to
Military activities through the DOD Single Stock Point, US Naval Supply
Depot (NSD 103), 5801 Tabor Avenue, Philadelphia, PA 19120. Nonmilitary
activities may obtain copies from:
(ANSI) American National Standards Institute
1430 Broadway, New York, NY 10018
(ASTM) American Society for Testing and Materials
1916 Race Street, Philadelphia, PA 19103
(IEEE) The Institute of Electrical and Electronics Engineers, Inc.
345 E. 47th Street, New York, NY 10017
3. DEFINITIONS
3.1 Abbreviations. An abbreviation is a shortened form or abridgment
of a word, expression or phase used to conserve space and time.
4. GENERAL REQUIREMENTS
4.1 Clarity. Abbreviations shall be used only when their meanings are
unquestionably clear to the intended reader. WHEN IN DOUBT, SPELL IT OUT.
Abbreviations that are not in comnon use and are to be used frequently
in a document or where thewis doubt that the reader will understand their
meanings, should be clarified when first used: by spelling out the word
or complete phrase, followed by the abbreviation in parentheses.
4.2 Word combinations. Portions of an abbreviation for a word combination
shall not be separated for use singly. Single abbreviations may be
combined when necessary if there is no abbreviation listed for the combination.
4.3 Syntax. Unless othewise indicated herein, the same abbreviation
shall be used for all tenses, the possessive case, participle endings,
the singular or plural, and the noun and modifying forms of a term.
4.4 Capitalization. Abbreviations included in the left-hand column
provide the form for use on drawings and documents produced in upper-
case characters. The abbreviations in the right-hand column provide the
form required for documents produced in lower-case characters; however,
these abbreviations may be capitalized when required for emphasis.
Abbreviations that are capitalized in the right-hand column are a contin-
uation of prior usage and in general are abbreviations for major systems
or are recognized as having significant application when used in text.
Abbreviations are not listed in the right-hand column for many short words.
If space limitations make it necessary to abbreviate such terms, the abbre-
viation which appears In the left-hand column shall be used except for the
sllbstitutionof lower-case letters.
2
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MIL-STD-12D
29 )&y 1981
4.5 Punctuation.
4.5.1 Punctuation marks which do not appear in this standard shall not
be used with the abbreviation of a techn~cal term; however, an abbrevia-
tion spelling a whole word should include a period if the abbreviation
is not obvious to its intended reader. An exception is made for abbrevia-
tions used in computer applications wherein a hyphen (-) may be sub-
stituted for a blank space which appears in an abbreviation, eg. ‘seq-
chk’ in lieu of ‘seq chk’.
4.5.2 Hyphens should be used with adjectival forms of abbreviations and
symbols, eg, a 35-nunfilm.
4.6 Revised abbreviations. Abbreviations in this standard reflect
recent changes in the state-of-the-art.
4.7 Symbols. The distinction between abbreviations and symbols is
tricky, because it depends upon context, rather than form. For example,
“the current is 5 amps” and “the pressure is 3 psi” are allowable uses of
abbreviations, whereas writing “I = 5 amp” and “P = 3 psi” are incorrect.
Whenever a mathematical operation or sign is involved, such as the
equality sign (=) or the division sign (/)~ abbreviations cannot be used=
Mathematical operations re performed only upon symbols; for example,
I =5Aandp=31bf/in. !l Symbols that appear in the following docu-
ments are preferred (for example, “the current is 5 A“) in lieu of abbrevi-
ations that appear in this standard and shall be used in lieu of abbrev-
iations for terms that do not appear herein:
Chemical Symbols: Webster’s Unabridged Dictionary (International
Tabl~& of Chemical Elements)
b. Mathematical Symbols: ANSI Y1O.2O and YIO.20a
c. Quantity Symbols: ANSI YIO.3 and ANSI Y1O.5
d. Unit Symbols: ANSI/IEEE STD 260
e. Metric Practices: ASTM E380
4.8 Abbreviati~ns used in existinq technical documents: Unless,o~he~ise
specified, any changes or revis~ons to an existing drawing, speclflcatlon,
standard, or technical document prepared under a previous edition of this
standard, may use the latest abbreviations, although the superseded
abbreviations may appear elsewhere in the documnt.
5. DETAILED REQuIRmE~Ts
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5.1 List of terms and their abbrevtitions.
ABBREVIATION TER,M
l programfw Iamam APL APL action ticm
wandon ship A80NSW abm@W lct lvato
abaxt81 AEXL lbx 1 lcttvattoflanalysis
abbrev tlte ABOR lbbe lctivator AcTvm ~r
abnorma t A8NL lbn 1 lctlv8counterwmsurfks
abw t A8T lbt lctlvo 81ement group MC 8*
lbevc A8V abv actfvo Integral defense AID atd
lbove basellm? AOL lb1 lctfv- repaatersatell~te ARS
8bove ground level AGL lg1 lctfvtty AC?
lbove -an sea ~-f.t AMSL alas 1 lctual AffL ~tt
abovo sea level ASL ls1 lctualgroundzero AGZ
abov9 water Au SW lctual timeover target ATOT ltmt
ltmastve AORSV abrsv actuate ACtE U*
abrasiv~ resistant AORSV RES lbrsv res actuating ACTG l=W
lbsolut8 Am lctuator &CTR 8CW
lb?olute ce~ltng ASS CLG lbs Clg ldaptation ADAPT ldafat
absolutely lssential AEE ME Sdaptmr AOPTR adptr
mtpaent llapt*r booster a% S&
lbsorption AesoRa absorb Adaptiv@ flight Control AFCS APa
lbstract ASSTR abs tr system
acadea ic ACAO lcati •~ ADD
accelerate ACCEL lcce 1 adder ADDu
lccelemtur ACLtR lcl tr lmltien
accelerometer ACCLRM lcc 1m ltiittonal AOOL
lccep t A-T acp t l-i tfv. ADOT
lcceptotsle qaaltty level AQL address 4DRS
lcceptable cwaltty test AQT Am l-r. Am
lcceptable re!tabfl~ty I@vel ML ARL a49tes iv. ADH
•rx~tmc* Cttactcout Aa ACE ldjacent “ AOd
~fpmmt adjscent channel lttmwatfm ACA
lcceptor ACPTR ecptr adjust nod
lccess 4CS 8CS ldjustable speed AOd W
lccess opentng Ao lo l-ttttng ADMG
lccess panel BP m ausorbant ADSORB
lccess ttm ABT 8CSt l* anw AOV
lccessory ACCESS lcc-ss” advam engineering change ACCP
acctdent ACDT lcdt propesa I
lccomodate ACCOM advanm enginwring ordar AEO leo
•~amy advance alt8ratton notice AAN lan
xcql tsh ACCOMP accouv ldvanco change notice ACN lcn
accordance with A/V llu “ ldvance materfal request ANR
lccount lcct ldvanced l~f-lal ffre AAFSS ;:ss
lccruer accr ~rt system
lccumulate ACCUN 8c- ldvanwd bslltstic reentry AERES A8RES
lccurm18tion distribution mu Sys tam
unit advanced battery A8AR abar
ac~lator Acc acc lcqtsition radar
ac~)ator switch Acs acs ldvanced capabillttes radar ACR
lccur8te ACWR lccur advati *fens@ ADCS
lcetate ACTT actt c~fcations satellite
acetate I tnsul ) [see ---- ---- ldvanced -sign lrray radar AOAR adar
cellulose lcetate) advanced firtng systems AFS RFS
&ety)ena “ ACE? lce t ldvanoed Ranned interceptor AMI S@
acid reststtng AR lr ldvamed manned penetrator
llcctidc@rwwafste AAWP alpu ldvlatnrceerdaf mt anned stratagtc AMA lmsa
sci*roof fioor APF lpf ldvanced orbtttng solar AOSO loso
lcftnow 1edge ACU lck obsewatory
~ screw thread &cm ACNE ldvanced tacticaI ball fsttc ATEM
acobm t lC ACS? lcst mtssl Ie
acoustic mfne sweepfng Amsw amnsup l-mtage ADVG aeg
lcousttc tfl- celltng 47C ltc ldvertisement m ld
acoustical plaster tailing APC lpc ldv ise AOVS ldvs
lc~ ire ACQ lcq ldv 1wry AOVSY amlsy
acQJts$tfom ACQ lcq aerial deltvmy sy.stem AOS Aos
lcgtsft$on advice code AAC AAC lerodynamic AEROOYN amrmdyn
ac~lsltlon raciar AR w lerodyrtamtc center AC SC
across ACR lcr serodynamtc heattng A6ROHEAT loroowa t
lcross +lats ACRFLT acrf1t lerologlcal AEROL lerd
-- lcrylic ACRYL Scry? 8WWnmJtfc AERO lero
action ACTN act?l lcrofmutlcal mater~a Am
acttonCutwt lce Specification
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?!IL-STD-12D
29 kly 1981
TERM AWIREVIATION TER,M AFH3REVIATION
aeronautical national taper ANPT ANPT ltr to ground mfsslle AGM lgm
ptpe threads lfr to ground to afr AGA aga
aerenauttcal rec~nded 4RP arp lir to surface missile ASM asm
practices llr to underwater mtsstle AUM aum
amonautlcal standards group ASG ASG lir trafffc control ATC ATC
lerospace AERUSP aerosp lfr transport radto ATR atr
aerospace ground equloment AGE AGE ltr transportable sonar ATS lts
aerospace veh~cle equipment AVE avE llr turbine drive ATD atd
lfter AFT lft ltr turbtne motor ATM ltm
lfter cooler AFTCLR lftclr ltr turbine starter ATS lts
lft-r engfne room AER ler ltrborne ABN abn
after p*aic AP lp ltrbome eerly uarnlng AEU AEU
lfter perpendicular AP lp airborne early uarnlng AEUA lewa
after torpedo room AtRM ltrm ltrcraft
afterburner All lb ltrborne larly uarntng ana AEW6C AEWC
lfternoon Ipost mridieml PM Pm control
lgen t AGT lgt lirborne fixed lrray radar AFAR lflr
lggrega te AGGR lggr lirborne gunlaytng AGL agl
lgitstc &G ag alrbome interceptor Al a{
lt1eron AIL l~l ltrborne long range radar ALRI llrf
ltmtng point AP lp tnput
llr base A8 AB ltrborne radar lnd dopp~er ARAO lrad
lir blast As lb ltrborne ris@ar approach ARA lra
ltr blast ctrcuft breaker ABCB lbcb lirborne surveillance radar ASR lsr
l~r biast transformer AOT lbt ltrbome very low frequency AVLF lvlf
a{r break switch A@ SW lb sw ltrboene vtbration monitor AVM lvm
air Clrcuft breaker ACE lcb ltrcooled ACLO lctd
air circulating ACIRC lctrc lircraft ACF? lcFt
lir c188ner AIRCLNR lirclnr ltrcraft approach I*ght AAL laJ
llr condftton AIR COND lir Cond ltrcrart control and ACS lcs
l~r data co~ting AOC ldc survei 1lance
ltr decoy missile AOM ldm aircraft control lnd warn!ng ACV lcu
lir defense lrtillery AOA AOA atrcraft mtss~le project AMP lfw
lir *t AO ld llrcrs?t nuclear power 8-
ltr lscape AC (propulsion)
Alr Fore@ Navy AN : lirfr~ AFR afr
Atr force Navy AeronautlcaI ANA ANA ltrfrasm-mounted lccessory ANAO lmad
Air force Navy OeSign ANO dr1ve
Air force! Navy Cfvfl ANC ltrllft 4LFT l?ft
Air Force techntcal order AFTO AFTO airplane APL ap 1
air headee AHOR ahdr lirport APRT apr t
ltr hetght survetllanee AHSR ahsr atrport surface detectton ASDR asdr
radar radar
lfr homepover AHP lhp afrport survef IIance radar APSR apsr
ltr inductfon AINOTN aindtn afrscoop AS ls
atr installations AI li l1rspeed AS ls
lir intercept AI 8( ltrspeed indicator AI ll
lir Intercept missile AIM atm ltrtlght AT lt
lir launc~d ballistic ALBM llbm llarm ALU lim
misstle alarm Ch8ck valve ACV lcv
lir launched boost intercept A18 I albi llarm panel monitor APM apm
air launched vehtcle ALV llv llcohol ALC lle
lir lock AL 81 llgebra ALG llg
llr movement data AMU lmd algebralc co~iler lnd ACT lct
lir mn~tions AMUN amm translator
lir over AO lo llgori thm ALGO llgo
ltr over hydraulic A/ki l/h llgortthmfc-ortented ALGOL ALGOL
ltr passage AP ap Ilnguage
l~r poslt~on indicator API lpi al Idade ALOD lldd
lir refueling AR lr ll tgnment ALIGN lltgn
air route trafffc control ARTCC lrtcc alkaline ALK llk
cm ter llkal!ntty ALKY alky
lir sea rescue ASR asr all sluminum co~ctor AAC aac
a~r search raaar Asl? asr al 1 weather AU lu
lir shutoff ASNOF lshof lll-nunt3er call~ng ANC anc
llr shut tev AIRSHTR lirshtr allocate ALLC)C allot
l{r Specfficatton AS as lllocated configuration AC[ ACX
lir starttng ASTRG lstrg fdant!ficatlon
ltr to ltr A-A l]Iousnce ALLOW lnow
ltr to llr tdentiffcat{on AAI :A: lllwancm equtpage lfst AEL ae 1
ltr to lir missile AAM lam allouanc. parts Ifst hPL lp1
llr to ground A-G l-9 ll lay At.Y aly
Description:Whenever a mathematical operation or sign actuating qctuator qdaptation. Sdaptmr qlapt*r booster. Adaptiv@ flight. Control system. •~ qca qcktx qcle qcm qcta t qds qdx adl. AOP qdt qddar. AUTOOI N qdrac qdus . waterproof.