AA.
A member of Alcoholics Anonymous.
Meaning & usage
A member of Alcoholics Anonymous.
An AA battery (energy-storage device).
Initialism of affirmative action.
Initialism of air armament.
Initialism of air attaché.
Initialism of aircraft apprentice.
Initialism of aircraft artificer.
Initialism of absolute altitude.
Initialism of anti-aircraft.
Initialism of avenue of approach.
Initialism of assembly area.
Initialism of airman apprentice.
Initialism of absolute alcohol.
Initialism of achievement age.
Initialism of acting appointment.
Initialism of adoption agency.
Initialism of armament artificer.
Initialism of athletic association.
Initialism of author's alteration.
Initialism of aviation annex.
Initialism of angular aperture.
Initialism of amino acid.
Initialism of aminoacyl.
Initialism of acetic acid.
Initialism of acrylic acid.
Initialism of amyloid A.
Initialism of arachidonic acid.
Initialism of ascorbic acid.
Initialism of asymmetric aminohydroxylation.
Initialism of acetaldehyde adduct.
Initialism of adrenal androgen.
Initialism of antiandrogen.
Initialism of antioxidant activity.
Initialism of atomic absorption.
Initialism of activated alumina.
Initialism of anti-antibody.
Initialism of ascending aorta.
Initialism of abdominal aorta.
Initialism of aortic arch.
Initialism of acute appendicitis.
Initialism of allergic asthma.
Initialism of alopecia areata.
Initialism of anaplastic astrocytoma.
Initialism of anastomotic aneurysm.
Initialism of aortic aneurysm.
Initialism of aplastic anemia.
Initialism of arterial aneurysm.
Initialism of arytenoid adduction.
Initialism of anesthesiologist assistant.
Initialism of anesthesia assistant.
Initialism of antialiasing.
Initialism of African-American.
Initialism of Asian-African.
Initialism of Asian American.
Initialism of administrative assistant.
Initialism of associate administrator.
Initialism of assistant adjutant.
Initialism of academic adviser.
Initialism of Associate in Arts or Associate of Arts.
Initialism of appropriate authority.
Initialism of appropriate adult.
Initialism of account aggregator.
Initialism of appointed actuary.
Initialism of approximate absolute.
Initialism of arithmetic average.
Initialism of Association Agreement: a treaty between the European Union, its member states and a non-EU country that creates a framework for cooperation between them.
Initialism of against actual.
Initialism of approach anxiety.
Initialism of agent assistant; an assistant of a real estate agent.
Initialism of annual allowance.
Abbreviation of all-around.
Initialism of average audience.
Where this word comes from
Abbreviations.
Initialism of Alcoholics Anonymous: a self-supporting organization of alcoholic people.
Initialism of Academy Awards: a recognition of excellence in cinematic achievements, given annually by the Academy of Motion Picture Arts and Sciences.
Initialism of Addicts Anonymous.
Initialism of Al Ain.
Initialism of American Airlines: a major American airline headquartered in Fort Worth, Texas.
Initialism of Aerolíneas Argentinas.
Initialism of Ansett Australia or Ansett Airways.
Initialism of Air Almanac, a publication.
Initialism of American Anthropologist: the flagship journal of the American Anthropological Association, founded in 1888.
Initialism of Acta Astronautica: a scientific journal founded in 1955, covering fields related to the peaceful scientific exploration of space.
Initialism of Aluminum America, a corporation.
Initialism of The Aluminum Association: a trade association for the aluminum production, fabrication and recycling industries.
Double-A: the second-highest level of play in Minor League Baseball after Triple-A (AAA).
Initialism of American Association: an American minor league baseball league from 1902 to 1962 and 1969 to 1997.
Initialism of The Automobile Association: a British motoring association founded in 1905.
Initialism of Alzheimer's Association: an American volunteer health organization focusing on care, support and research for Alzheimer's disease.
Initialism of Amalgamated Association of Iron and Steel Workers.
Initialism of Ann Arbor Railroad.
Initialism of Arlington Annex.
USPS military code of Armed Forces – Americas.
Initialism of Army Act.
Initialism of aviatsionnaya Armiya.
Initialism of Antiproton Accumulator: an infrastructure connected to the Proton–Antiproton Collider at CERN.
Alternative form of A∴A∴.
Initialism of Anna's Archive.
Abbreviation of Alcoa.
Where this word comes from
Abbreviations.
Initialism of anti-aircraft or anti-air.
Initialism of air-to-air.
Initialism of atlantoaxial.
AA joint; AA instability
Initialism of arterioarterial.
AA anastomosis
Initialism of Afro-Asiatic.
Initialism of Austroasiatic.
Where this word comes from
Abbreviations.
Initialism of antialias.
Where this word comes from
Abbreviations.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.