7605 abbreviations
Abbreviation Meaning
a Atto-
A Ampere
A10 Atlantic 10 Conference
A1C Airman First Class
A2ATD or A2ATD Anti-Armour Advanced Technology Demonstration
A2C2 or A2C2 Army Airspace Command and Control
A4 many, including a European standard office paper size; see entry
aa Afar language (ISO 639-1 code)
aA Attoampere
AA achieved availability
AA Armed Forces Americas (postal symbol)
AA Aruba (FIPS 10-4 territory code)
AA assembly area
AA Automobile Association
AA avenue of approach
AAA administration, authorization, and authentication
AAA American Automobile Association ("Triple-A")
AAA anti-aircraft artillery
AAA Amateur Athletic Association (of England)
AAA Asistencia Asesoría y Administración (Spanish, "Assistance, Consulting, and Administration"—Mexican professional wrestling promotion)
AAAI American Association for Artificial Intelligence
AAAS American Association for the Advancement of Science
AAC American Athletic Conference
AAC Army Air Corps (British Army)
AAD analogue-analogue-digital (CD quality)
AAD Australian Antarctic Division
AADAC Alberta Alcohol and Drug Abuse Commission
AADC area air defense commander
AADC amino acid decarboxylase
AADC aromatic L-amino acid decarboxylase
AADC Australian Antarctic Data Centre
AADD Adult attention deficit disorder
AADT annual average daily traffic
AAFC U.S. Army Air Corps Ferrying Command (1941–1942)
AAFC All-America Football Conference (1946–1949)
AAFES Army and Air Force Exchange Service
AAI applied artificial intelligence
AAIS advanced airborne interceptor simulator
AAM air-to-air missile
AAMOF as a matter of fact
AANEAS Anglo-Australian Near-Earth Asteroid Survey
AAODL Atmospheric Aerosols and Optics Data Library
a.a.p. Associated Artists Productions (former film distributor)
AAP advanced acquisition plan
AAP Allied administrative publication
AAPC Accounting and Auditing Policy Committee
aar Afar language (ISO 639-2 code)
AAR after-action review
AAR Association of American Railroads
AARP (i/s) American Association of Retired Persons (now officially known only by the initials)