A

A

ampere

A/DACG

Arrival/Departure Airfield Control Group

A/S, ASW

Anti-submarine (warfare)

AA

anti-aircraft

AAA

Antiaircraft Artillery

AAAM

Advanced Air-to-Air Missile

AAAW

advanced airborne anti-armor weapon

AABNCP

Advanced Airborne National Command Post

AAC

Army Air Corps

AACOMS

Army Area Communications System

AADC

Area Air Defense Commander

AAH

advanced attack helicopter

AAI

Air-to-Air Interrogator Set

AAM

Air-to-air missile

AAR

After Action Report

AAR

Air-to-air refuelling.

AARADCOM

Army Armament Research and Development Command

AASLT Div

Air Assault Division

AAT

All arms trencher

AATH

Automatic approach to hover.

AATU

Automatic Antenna Tuning Unit

AAV

amphibious armored vehicle

AAV

Amphibious Assault Vehicle

AAV

Assault Amphibian Vehicle

AAVP

Assault Amphibian Vehicle Personnel

AAVR

Assault Amphibian Vehicle Recovery

AAW

Anti-Air Warfare

AAWS

Advanced Anti-tank Weapon System

AB

Air Base

AB

assault breaker

AB(D)

airborne (division)

ABC

Atomic, Biological and Chemical

ABCCC

Airborne Battlefield Command And Control Center

ABDR

Aircraft Battle Damage Repair

ABEDA

Arab Bank for Economic Development in Africa

ABF

Advanced Bomb Family

ABFDS

Aerial Bulk Fuel Delivery System

ABL

armored box launcher or airborne laser

ABLE

Automotive Bridge Launching Equipment

ABM

anti-ballistic missile

ABN

Airborne

Abn Corps

Airborne Corps

about

the total could be higher

ABRES

advanced ballistic re-entry system

ABRV

advanced ballistic re-entry vehicle

ABS

Anti-lock brake system

ABS(T)

Amphibious bridging system (tracked)

AC

Active Component

ac

aircraft

AC

alternating current, or air combat

ACA

Airspace Control Authority or Airlift Clearance Authorities

ACADA

Automatic Chemical Agent Detector Alarm

ACAS

Air Combat Assessment Summary

ACAS

Airfield Chemical Alarm System

ACC

Air Combat Command.

ACC

Air Component Commander or Airspace Coordination Center or Arab Cooperation Council

ACCB

Air Cavalry Combat Brigade

ACCS

Airborne Command and Control Squadron

ACCS

Army Command and Control System (USA) or Air Command and Control System (NATO)

ACCT

Agency for Cultural and Technical Cooperation

ACD

Automatic Call Distribution

ACDA

Arms Control and Disarmament Agency

ACDS

Advanced Combat Direction System

ACDVS

Aircrew Chemical Defense Ventilator System

ACE

Airborne Command Element (USAF) or Aviation Combat Element (USMC) or Air Combat Element (NATO) or Armored Combat Earthmover (US Army)

ACE

Allied Command Europe (NATO)

ACE-ACCIS

Allied Command Europe Automated Command Control and Information System (NATO)

Ace High

Tropospheric scatter communications network (NATO)

ACEATM

Aimed Controlled Effect Anti-tank Mine

ACF

Activated Carbon Fabric

ACK

acknowledgement

ACLICS

Airborne Communications Location Identification and Collection System

ACLOS

Automated Command to Line Of Sight

ACLS

Automatic carrier landing system.

ACM

advanced cruise missile

ACM

Air Combat Maneuvers

ACMI

air combat maneuvering instrumentation

ACMS

automatic communication management system

ACN

Aircraft classification number

ACO

Airspace Coordination Order or Airspace Control Order

ACP

African, Caribbean, and Pacific Countries

ACP

Automatic Colt Pistol

ACP Group

African, Caribbean, and Pacific Group of States

ACR

Advanced Combat Rifle

ACR

Armored Cavalry Regiment

ACRV

Armored Command and Reconnaissance Vehicle

ACT

airborne crew trainer

ACU

Air Conditioning Unit

ACV

air cushion vehicle/ vessel/ armored combat vehicle

ACV

armored cannon vehicle

ACWAR

agile continuous wave acquisition radar

AD

Air Defense

AD

Air Division

ADA

Air Defense Artillery

ADAM

Area denial artillery munition

ADAMS

air defense anti-missile system

ADat-P3

Automatic Data Processing (Standard) 3 (NATO)

ADATS

air defense anti-tank system

ADAWS

Action Data Automation Weapons System

ADC

Asynchronous Digital Combiner

ADCAP

advanced capabilities

ADCIS

Air Defense Command Information System

ADDS

Army Data Distribution System

ADELE

Alert Detection Et Localization des Emetteurs

ADF

Automatic Direction-Finding

ADG

Accessory-drive generator.

ADGE

air defense ground environment

ADI

Air Defense Initiative, or Australian Defense Industries

ADIMP

Ada Improvement Program (UK)

ADIVS

air defense interoperability validation system

adj

adjusted

ADKEM

advanced kinetic energy missile

ADLIPS

Automatic DataLink Plotting System

ADM

atomic demolition munitions

ADOC

Air Defense Operations Center

ADP

automatic data processing

ADPG

Air Defense Planning Group

ADR

Air Defense Region

ADS

automatic defense system

ADSAF

Automatic Data System for the Army in the Field

ADSCOM

Advanced Ship Communications

ADT

Airborne Data Terminal or Automatic Data Transmission

ADX

Air Defense Exercise

AE

assault echelon

AE

auxiliary, ammunition carrier (in Military Balance)

AEC

Associated Equipment Company

AECB

Arms Export Control Board

AECC

Aeromedical Evacuation Control Center

AEGIS

AEW/ground environment integration system

Aegis

Ship based long-range air defense System.

AELT

Aeromedical Evacuation Liaison Team

AES

Aeromedical Evacuation Squadron

AEV

Armored engineer vehicle

AEW

airborne early warning

AEW&C

airborne early warning and control

AF

audio frequency

AF

stores ship with RAS

AFAP

artillery-fired atomic projectile

AFARV

Armored forward area rearm vehicle

AFATDS

advanced field artillery tactical data system

AFB

Air Force Base

AFB/S

Air Force Base/Station

AFC

automatic frequency control

AFCOMAC

Air Force Combat Ammunition Center

AFCS

Automatic flight control system.

AfDB

African Development Bank

AFDE

Arctic fuels dispensing equipment

AFDIGS

Air Force Digital Graphics System

AFESD

Arab Fund for Economic and Social Development

AFEWC

Air Force Electronic Warfare Center

AFGWC

Air Force Global Weather Center

AFHRA

Air Force Historical Research Agency

AFLC

Air Force Logistics Command

AFLIF

Air Force Logistics Information File

AFLMC

Air Force Logistics Management Center

AFMIC

Armed Forces Medical Intelligence Center

AFMSS

Air Force Mission Support System

AFR

Air Force Reserve

AFRP

Aramid fiber-reinforced plastics.

AFS

automatic frequency selection

AFSARC

Air Force Systems Acquisition Review Council

AFSATCOM

Air Force Satellite Communications

AFSC

Air Force Systems Command or Air Force Specialty Code

AFSK

Audio Frequency Shift Keying

AFSOC

Air Force Special Operations Command

AFSOUTH

Allied Forces, South (NATO)

AFU

Air Filtration Unit

AFV

Armored fighting vehicle

AFWMPRT

Air Force Wartime Manpower and Personnel Readiness Team

AG

Andean Group; see Andean Community of Nations

AG

misc. auxiliary

AGC

automatic gain control

AGE

Advanced Graphics Engine, or Air/Ground Environment

AGE

Aerospace Ground Equipment

AGES/AD

Air-to-Ground Engagement/Air Defense

AGHS

hydrographic survey vessel

AGI

intelligence collection vessel

AGL

Above Ground Level

AGL

Automatic Grenade Launcher

AGM

air-to-ground missile

AGM

air-to-ground missile designator

AGOR

oceanographic research vessel

AGOS

ocean surveillance vessel

AGREE

Advisory Group on Reliability in Electronic Equipment.

Ah

Ampere hour

AH

hospital ship (in Military Balance)

AHCP

Ad Hoc Collective Protection

AHE

Ammunition handling equipment

AHM

Anti-helicopter mine

AHRS

Attitude and heading reference system

AI

Air Interdiction

AI

artificial intelligence, or air intercept (for instance AI radar)

AIAAM

advanced intercept air-to-air missile

AIDS

Advanced Integrated Display System

AIF

Automated Installation File

AIFV

Armored Infantry Fighting Vehicle

AIG

Address Indicator Group

AIM

air intercept missile designator

AIO

action information organization

AIP

Air independent propulsion

AIR

Air Inflatable Retarder

AIS

Advanced instrumentation subsystem.

AIWS

Advanced Interdiction Weapons System

AJ

Anti-Jamming

AK

cargo ship (in Military Balance)

AKR

fast sealift ship (in Military Balance)

AL

Arab League

ALAD

Automatic Liquid Agent Detector

ALARM

Air-Launched Anti-Radiation Missile

ALB

Automatic load-dependent brake

ALC

Air Logistics Center

ALC

Automatic Level Control

ALCC

airborne launch control center

ALCC

Airlift Control Center

ALCE

Airlift Control Element

ALCM

Air-Launched Cruise Missile

ALCS

airborne launch control system

ALE

automatic link establishment

AlFV

armored infantry fighting vehicle

ALGOL

algorithmic language

ALMSNSCD

Airlift Mission Schedule

ALO

Air Liaison Officer

ALOC

air line of communications

ALOFT

Airborne Light Optical fiber Technology (US)

ALQA

automatic link quality analysis

ALWT

advanced lightweight torpedo

AM

amplitude modulation

AMAD

Airframe-mounted accessory drive.

AMB

Air-Mobile Brigade

AMC

Air Mobility Command.

AMC

Army Materiel Command

AMCCOM

Armaments, Munitions and Chemical Command

AMCM

airborne mine countermeasures

AME

AM Equivalent

AMETS

Artillery Meteorological System

AMF

Arab Monetary Fund

AMG

Alarm Monitor Group

AMIDS

Airborne minefield detection system

AMMAD

Anti-magnetic mine actuation device

amph

amphibious/amphibian

AMPS

Automated Message Processing System (UK)

AMRAAM

Advanced Medium-Range Air-to-Air Missile

AMS

automatic marking system

AMSL

Above Mean Sea Level

AMTD

adaptive moving target detection

AMU

Aircraft Maintenance Unit

AMU

Arab Maghreb Union

AMV

Armored Maintenance Vehicle

ANBACIS

Automated Nuclear, Biological and Chemical Information System

Ancom

Andean Common Market; or Andean Community of Nations

ANDVT

Advanced Narrowband Digital Voice Terminal

ANG

Air National Guard

ANGLCO

Air and Naval Gunfire Liaison Company

ANS

supersonic anti-ship

ANVIS

aviator's night vision imaging system

ANZUS

Australia-New Zealand-United States Security Treaty

AO

Area of Operation

AO/T

tanker(s) with/without RAS capability (in Military Balance)

AOA

airborne optical adjunct

AOB

Air Order of Battle

AOCM

advanced optical countermeasures

AOE

auxiliary, fuel and ammunition, RAS capability (in Military Balance)

AOP

Air observation post.

AOR

Area of Responsibility

AOSS

automatic ordnance scoring system

AOV

artillery observation vehicle

AP

armed for anti-personnel attack (in Military Balance)

AP

Armor-Piercing. Signifies a solid projectile for kinetic energy attack of armor.

APACHE

Analysis of Pacific Area Communications for Hardening to EMP

APAR

advanced phased array-radar

APB

analyzing printer base

APC

(1) Armored Personnel Carrier. (2) Armor-Piercing, Capped. An AP projectile with a penetrating cap over its point.

APCBC

Armor-Piercing, Capped, Ballistic Capped. An APC projectile with a light ballistically shaped nose cap to improve flight characteristics.

APCC

Aerial Port Control Center

APCU

Alarm and Power remote-Control Unit

APDS

Armor-Piercing, Discarding Sabot. A kinetic energy attack projectile with a heavy core, supported in the gun by a light metal or plastic sabot which is discarded at the muzzle.

APE

armor-piercing explosive

APEC

Asia Pacific Economic Cooperation

APFC

Air-portable fuel container

APFD

Autopilot flight director.

APFSDS

Armor-Piercing, Fin-Stabilized, Discarding Sabot. Kinetic energy projectile using a heavy, dart-like subprojectile supported in the gun bore by a light sabot. Used generally with smoothbore anti-tank weapons but also found with rifled weapons, in which case the driving band merely seals and is free to rotate, so as to impart minimum spin to the subprojectile.

APL

anti-personnel land-mine

APOD

Aerial Port of Debarkation

APR

Auxiliary power reserve.

APS

Afloat Propositioning Ship

APSE

Ada programming support environment

APU

Auxiliary power unit

AQAP

Allied Quality Assurance Publication

AQL

advanced quick look

AR

Armor

AR

repair ship (in Military Balance)

AR&M

availability, reliability and maintainability

AR(R)V

armored recovery (and repair) vehicle

Arabsat

Arab Satellite Communications Organization

ARBS

Angle Rate Bombing Set

ARC

Air Reserve Components

ARCE

Amphibious river crossing equipment

ARCENT

U.S. Army Forces, Central Command

ARCENT

Army Component, Central Command

ARE

Admiralty Research Establishment

AREFS

Air Refueling Squadron

ARG

amphibious ready group

ARGES

Automatic Rocket Guardian with Electronic Sensor

ARINC

Aeronautical Radio Inc (US company)

ARM

anti-radar missile

ARM

Antiradiation Missiles

armd

armored

ARMS

Armored Resupply Maintenance System

ARNG

Army National Guard.

ARNG

U.S. Army National Guard

ARP

anti-radiation projectile

ARPA

Advanced Research Projects Agency

ARPANET

Packet switched data communications network

ARQ

Automatic Repeat Request

ARRV

Armored Repair and Recovery Vehicle

ARS

Aerial Radiac System

ARS

Air Rescue Service

ARS

salvage ship

ARSR

air route surveillance radar

ARTADS

Army Tactical Data System

Arty

artillery

ARV

Armored recovery vehicle

ARW

Air Rescue Wing

AS

air-to-surface

AS

submarine depot ship

ASARDA

Assistant to the Army for Research, Development and Acquisition

ASARS

Advanced Synthetic Aperture Radar system

ASAS

All Source Analysis System

ASAT

anti-satellite weapon

ASCII

American Standard Code for Information Interchange

ASCL

Advanced Sonobuoy Communications Link

ASCM

anti-ship cruise missile

ASCON

Automatic Switched Communications Network

ASD(PA)

Assistant Secretary of Defense (Public Affairs)

ASD(SO-LIC)

Assistant Secretary of Defense (Special Operations and Low Intensity Conflict)

AsDB

Asian Development Bank

ASDC

alternative space defense center

ASE

(1) Automatic stabilization equipment (2) Aircraft survivability equipment.

ASEAN

Association of Southeast Asian Nations

ASF

Army standard family

ASI

Airspeed indicator.

ASIC

application specific integrated circuit

ASIR

Airspeed indicator reading.

AsIt

assault

ASM

Air-to-Surface Missile

ASMA

Air Staff Management Aide (UK and Iraq)

ASMI

airfield surface movement indicator

ASMP

air-to-surface medium range

ASOC

Air Support Operations Center

ASPIS

advanced self-protection integrated suite

ASPJ

airborne self-projection jammer

ASR

airfield surveillance radar

ASR

submarine rescue craft

ASRAAM

advanced short-range air-to-air missile

ASROC

anti-submarine rocket

ASRP

Arc Standard Raster Product

AST

Air Staff Target

ASTAMIDS

Airborne Standoff Minefield Detection System

ASTAR

airborne search target attack radar

ASTD(AE)

Assistant to the Secretary of Defense for Atomic Energy

ASTOR

airborne standoff radar

ASTOVL

Advanced STOVL.

ASUW

anti-surface unit warfare

ASUWC

Anti-to-Surface Unit Warfare Commander

ASV

Anti-surface vessel.

ASW

anti-submarine warfare

ASW/SOW

anti-submarine warfare/standoff weapon

AT

Anti-tank

ATA

advanced test accelerator

ATAC

All-terrain all climate All-terrain amphibious carrier

ATACMS

Army Tactical Missile System

ATACO

air tactical control operator

ATACS

Army Tactical Communications System (US)

ATAF

Allied Tactical Air Force (NATO)

ATAFCS

airborne target acquisition and fire control system

ATARS

advanced tactical air reconnaissance system

ATB

advanced technology bomber

ATBM

anti-tactical ballistic missile

ATC

air traffic control

ATC

Air Training Command

ATCAP

Army Telecommunications Automation Program

ATCC

air traffic control center

ATCCS

Army Tactical Command and Control System

ATCO

air traffic control officer

ATCRU

air traffic control radar unit

ATDS

Airborne Tactical Data System

ATE

automatic test equipment

ATF

advanced tactical fighter

ATG

automatic test guide

ATGM

anti-tank guided missile

ATGM

Anti-Tank Guided Munitions

ATGW

Anti-Tank Guided Weapon. A missile guided to its target and intended for the attack of armored vehicles.

ATHS

Airborne target handover (handoff) system.

ATIS

Anti-tank influence sensor

ATK

anti-tank

ATLAS

All Terrain Lifter Army System

ATM

anti-tactical missile

ATMDS

Anti-tank mine-dispensing system

ATMP

All-terrain mobile platform

ATO

Air Tasking Order

ATR

air transportable rack

ATRJ

advanced threat radar jammer

ATS

agile target system, or air traffic system, or aircrew training system

ATTD

Advanced technology test demonstrator

ATTG

Automated Tactical Target Graphic

ATTV

Armored Treatment and Transport Vehicle

ATU

Antenna Tuning Unit

ATV

All-terrain vehicle

AUTODIN

Automatic Digital Network

AUTOSEVCOM

Automatic Secure Voice Communications System

AUTOVON

Automatic Voice Network

AUV

Autonomous undersea vehicle

AUVS

Association for Unmanned Vehicle Systems

AUW

All-up weight (term meaning total weight of aircraft under defined conditions, or at a specific time during flight).

Aux

Auxiliary (all types)

AV

Air vehicle

AVCAL

Aviation Coordinated Allowance List

AVE

Armored vehicle for engineers

Avgas

Aviation gasoline

avionics

Aviation electronics.

AVLB

Armored Vehicle-Launched Bridge

AVM

Airborne Vapor Monitor

avn

aviation

Avn Bde

Aviation Brigade

AVRE

Assault Vehicle Royal Engineers

AW

Amphibious warfare ship

AWACS

Airborne Warning and Control System

AWARE

advanced warning of active radar emissions

AWDATS

Automatic Weapon Data Transmission System

AWN

Automated Weather Network

AWS

Airborne Warning System

a

About, acre, acres, area

A

(Chem.) argon, (Phys.) angstrom unit,

Absolute temperature

AA

anctiaircraft, Automobile Association

A^O, A^O.U.

(Phys.) ؛Ansgstrِm or ؛Ansgstrِm unit

AAA

Antiaircraft artillery, American

Automobile Association

A.A.A.L.

American Academy of Arts and Letters

A.A.A.S.

American Association for the Advancement of Science

A.A.R.

against all risks

A.A.U.P.

American Association of University Professors

A.B.

 Bachelor of Arts

abbr.

Abbreviation

abbrev.

abbreviated, abbreviation

abl.

Ablative

abn.

Airborne

abp.

Archbishop

abr.

abridged, abridgment

abs

Absolute

abstr.

Abstract

ac

Account

Ac

(Chem.) actinium, (Meteor.) altocumulus

(Elec.) alternating current

A.C.

Before Christ, athletic club

acad

Academic, academy

acc.

account, accusative

A.C.E.

American Council on Education.

ack.

Acknowledge, acknowledgment.

acpt.

Acceptance

A.C.S.

American Chemical Society

act.

Active, actual

A.D.

active duty, air dried.

addn.

addition.

addnl.

Additional

ADF

(Radio) automatic direction finder.

adj.

Adjective, adjourned, adjunct, adjustment

adm.

administration, administrative, admiral.

admin.

Administration

adv.

Adverb, adverbial, adverbially, advertisement

advt.

Advertisement

Aeron.

Aeronautics

A.E.C.

Atomic Energy Commission.

A.F., a.f.

air force, Anglo French, audio frequency.

A.F.B.

air force base.

A.F.C.

automatic frequency control.

A.F.L. or

A.F. of L.

American Federation of Labor.

Afr.

Africa, African.

aft.

Afternoon.

Afrik.

Afrikaans

Ag

(Chem.) silver

A.G.C.

(Radio) Automatic Gain Control.

agey.

Agency

agr., agric.

agricultural, agriculture

Agt. or agt.

Agent

a.h.

ampere-hour, after hegirae

a.h.m.

(Elect. Eng.) ampere - hour meter.

A.H.A.

American Historical Association

A.I.A.

American Institute of Architects

A.I.E.E.

American Institute of Electrical Engineers

Al.

(Chem.) aluminum

A.L.A.

American Library Association

alc.,

Alcohol

alg.,

Algebra

alk.

alkaline, alkali

alt.

alternate, altitude, Alternative

a.m. or A.M.

ante meridiem i.e. before midday.

Am

(Chem.) americium

Am.

America, American

Amfr.

American Frrench

A.M.A.

American Medical Association

amb.

Ambassador

AmInd.

American Indian

AmSp.

American Spanish

amt.

Amount

A.M.U.

atomic mass unit

An

(Chem.) action

anal.

analogous, analogy, analysis

Anglo-Ind.

Anglo-Indian

Anat.or Anat.¹⁰¹⁰

anatomical, anatomy

Anglo-Fr.

Anglo-French

Anglo-Ir.

Anglo-Irish

Anglo-L.

Anglo-Latin.

Anglo-N.

Anglo-Norse.

Anglo-Norm.

Anglo-Norman.

anc.

Ancient

ann.

annual, annals

ans.

Answer

ant.

antenna, antonym

antilog

(Maths.) antilogarithm

anthrop.

anthropological, anthropology

A / o.

account of

A. O. V.

(Eng.) automatically operated valve

Ap.

April

A. P. I.

(Aero.) air position indicator

A. P.

additional premium, arithmetic progression

Associated Press, author’s proof

A. P. O.

Army post office

app.

apparatus, apparent, appendix, appointed

approx.

approximate, approximately

appt.

appoint, appointed

Apr.

April

apt.

Apartment

aq.

water, aqueous

AQ.

accomplishment quotient, achievement quotient

ar.

arrival, arrive, arrives

Ar

(Chem.) argon

Ar.

Arabic

ARAMCO

Arab American Oil Co.

A. R.

acknowledgment of receipt, all risks, annual return,

army regulations

Arab.

Arabia, Arabian, Arabic

ARC or

A.R.C.

American Red Cross

arch.

archaic, archaism, archery architect, architecture

Arch.

Archbishop

Archeol.

Archeology

arg.

Argent

arith

arithmetic, arithmetical

Ariz.

Arizona

Ark.

Arkansas

Arm.

Armenian.

arr.

arranged, arrival, arrive(d)

art.

article, artificial, artillery

arty.

Artillery

As.

(Chem.) arsenic.

AS.

airspeed, Anglo- Saxon, antisubmarine

ASI.

(Aero.) airspeed indicator

A. S. C. A. P

American Society of Composers, Authors and Publishers

A. S. C. E.

American Society of Civil Engineering

asg.

assigned, assignment

asgmt.

Assignment

A. S. L.

above sea level

A. S. M. E.

American Society of Mechanical Engineering

asso. or

assoc.

associate, association

associated

A. S. S. R.

Autonomous Soviet Socialist Republic

A. S. T. M.

American Society for Testing Materials

asst.

Assistant

Assyr.

Assyrian.

assy.

Assembly

At

(Chem.) astatine.

astrol.

astrologer, astrological, astrology

astron.

astronomer, astronomical, astronomy

at.

airtight, atomic

A. T.

(Chem.) acid treatment (Elec. Eng.) ampere turns.

AT.

antitank.

Atl.

atlantic.

atm.

atmosphere, atmospheric

at. no.

atomic number

att.

attached, attention, attorney

attn.

attention

attrib.

Attribute, attributive(ly)

A. T. O.

(Aero.) assisted take-off

atty.

Attorney

atty-gen.

attorney general

at. wt.

atomic weight

Au.

(Chem.) gold

A^˚. U., A^˚U

Angstrom Unit

A. U. W.

(Aero.) all-up weight

aug.

Augmentative

Aug.

August

A. U. S.

Army of the United States

Austral.

Australia, Australian

auth.

authentic, author, authorized

aux.

auxiliary

av.

avenue, average, avoirdupois

A. V.

Authorized Version (of the Bible)

A. V. C.

(Radio) Automatic Volume Control

avdp.

Avoirdupois

Av. eff.

(Eng.) average efficiency

ave.

Avenue

avg.

average

avn.

Aviation

A. W. G.

(Eng.) American Wire Gauge.

A. W.

actual weight, aircraft warning, articles of war, automatic weapon

A. W. O. L.

(Mil.) Absent without leave

AWU

(Chem.) atomic weight unit

ax.

Axiom

az.

azimuth, azure