AA
Arts, entertainment and media
- America's Army, a 2002 computer game published by the U.S. Army
- Ancient Anguish, a computer game in existence since 1992
- Aa!, a J-Pop musical group
- Double-A (band), stylised as AA, South Korean boy band
- Aa (album), a 2016 album by Baauer
- Ace Attorney, a series of video games developed by Capcom.
- AA Films, an Indian film distribution company
- AA Book (disambiguation)
- AA, the production code for the 1966 Doctor Who serial The Savages
Brands and enterprises
- A. A. Arms, a defunct firearms manufacturer
- The AA, a trading name of The Automobile Association in the UK
- Alcoa, an American aluminum-producing company (stock symbol AA)
- American Airlines, largest U.S. airline; headquartered in Fort Worth, Texas
- Anadolu Agency, a state-run press agency in Turkey
- Audio-Animatronics, used at the Disney Parks
Language
- aa, Latin-script digraph used in the orthographies of Dutch, Finnish and other languages
- aa, representation of letter Å in several Scandinavian languages
- aa, a romanization of Arabic letter alif ا
- Afar language (ISO 639-1 language code aa)
- Aa (Bengali), a Bengali letter
Measurements
- AA, a size in brassiere measurement
- AA, a width in shoe sizes
- AA battery size
Nature
- Aa (plant), a genus of orchid
- Aa (snail), a subgenus of snail
- ʻAʻā or aa, a form of lava
- A term for "river" in German hydronymy, see Aach (toponymy)
Organizations
- Alcoholics Anonymous, a worldwide fellowship of persons recovering from alcoholism
- AA Motoring Trust, a British road safety charity that merged with IAM Motoring Trust
- Academia de Artes, Mexico
- Alvesta Alternative, a political party in Sweden
- Amalgamated Association of Iron and Steel Workers, a former union in the United States
- Andecha Astur, an Asturian nationalist party
- Architectural Association School of Architecture, London, United Kingdom
- Astrological Association of Great Britain, London, United Kingdom
- Auswärtiges Amt, the Foreign Office of Germany
- Automobile Association (disambiguation)
- Danish Association of Architects (Akademisk Arkitektforening)
- The Automobile Association, a British motoring organization
Philosophy and religion
- A∴A∴, a spiritual organization created in 1907 by Aleister Crowley
- Abhisamayalankara, or Abhisamaya-alaṅkāra, a Mahayana Buddhist text
- Augustinians of the Assumption, a congregation of Catholic religious (priests and brothers)
- Statue of A'a from Rurutu, a wooden fertility-god sculpture from the Pacific island of Rurutu
- "A is A", an expression of the law of identity: each thing is identical with itself
People
- Aa (surname), a Scandinavian surname, including a list of people with this name
- Van der Aa (surname), a Dutch surname, including a list of people with this name
- Aa (architect), an architect in ancient Egypt
- Anthony Armstrong (writer) (1897–1972), Anglo-Canadian writer who used the pseudonym A.A.
Places
- Aa, Estonia, a village and beach in Estonia
- Aa, Indonesia, a populated place in the South Sulawesi province of Indonesia
- Ann Arbor, a city in Michigan, United States of America
Rivers
Belgium
- Aa, a river in Antwerp, which joins the Nete
France
- Aa (river, France), a river in northern France
Germany
- Aabach (Afte), formerly called the Große Aa, a river in North Rhine-Westphalia
- Aa (Möhne), a river in North Rhine-Westphalia
- Aa (Nethe), a river in North Rhine-Westphalia
- Aa (Werre), a river in North Rhine-Westphalia
- Kleine Aa (Aabach), a tributary of the Aabach in North Rhine-Westphalia
- Große Aa, a tributary of the Ems in Lower Saxony
- Große Aa (Aabach), a tributary of the Aabach in North Rhine-Westphalia
- Münstersche Aa, a river in Germany, one of several Westphalian rivers called Aa
Netherlands
- Aa (Meuse), a river in North Brabant, which joins the Dommel to form the Dieze
- Aa of Weerijs, a river in North Brabant, which joins the Mark at Breda
- Drentsche Aa, a river in Drenthe and Groningen
- Mussel Aa, a river in Westerwolde, Groningen
- Ruiten Aa, a river in Westerwolde, Groningen
- Westerwoldsche Aa, a river near Oudeschans, Groningen
Switzerland
- Aabach (Aare), a tributary of the Aare in canton of Aargau
- Aabach (Greifensee), or Usterner Aa, a river in canton of Zürich
- Aabach (Obersee), a tributary of Obersee (Zürichsee), in canton of St. Gallen
- Aabach (Seetal), a river in the cantons of Lucerne and Aargau, runs through Lake Hallwyl
- Chli Aa (Sempachersee), a tributary of Lake Sempach in the canton of Lucerne
- Engelberger Aa, a river in the cantons of Obwalden and Nidwalden, tributary of Lake Lucerne
- Gross Aa (Sempachersee), a tributary of Lake Sempach in the canton of Lucerne
- Mönchaltorfer Aa, a tributary of Greifensee in canton of Zürich
- Sarner Aa (river), a river in Obwalden, tributary of Lake Lucerne
Science and technology
- AA amyloidosis, a form of amyloidosis related to serum amyloid A
- Amino acid, often abbreviated aa when indicating positions in a peptide sequence (e.g., aa 120-150)
- Antiandrogen, a drug which blocks the effects of androgens
- Aplastic anemia, a rare disease
- Arachidonic acid, a polyunsaturated fatty acid
- Advanced Architecture, original name of Amiga Advanced Graphics Architecture
- Anti-aliasing, various techniques for mitigating certain signal processing artifacts
- Atlas Autocode, a computer programming language
- AA, a proprietary digital audio format of Audible.com
- Authoritative Answer, in DNS, a flag for a query answer
- AA postulate of Euclidean geometry
- Anti-aircraft, in military use
- Abampere (aA), the CGS unit of current
- Attoampere (aA), a unit of electric current equal to 10−18 Ampere
- AA tree, named after Arne Andersson
- AA, the abbreviation for azidoazide azide
- AppArmor
Sports
- Double-A (baseball) or Class AA, a classification level in Minor League Baseball
- American Association (19th century), baseball
- American Association (20th century), baseball
- American Association of Independent Professional Baseball, started in 2006
- Athletics Australia, national sporting organisation in Australia
Transportation
- AA Highway, a state highway in Northern Kentucky
- Ann Arbor Railroad (1895–1976), a defunct railroad in Ohio and Michigan
- Ann Arbor Railroad (1988), a railroad operating in Ohio and Michigan
- K line, a defunct line on the New York City Subway, formerly called "AA"
- NZR AA class, a locomotive class operated by the New Zealand Railways Department
Other uses
- African American, as a cultural identity
- Asian Aerospace, an airshow in Asia
- Associate of Arts, an academic degree
- European Union Association Agreement
- Postal abbreviation for United States armed forces in the Americas
- Japanese internet slang for Shift JIS art
- Internet slang for ASCII Art
gollark: It would probably still be somewhat slower, but more maintainable and easy to read/write.
gollark: You can use intrinsics for SIMD stuff in it.
gollark: I'd probably use Rust or something.
gollark: For most things, even.
gollark: Interrupt handlers are basically an assembly-level implementation detail for this sort of thing.
See also
- A (disambiguation)
- Å (disambiguation)
- Aach (toponymy)
- AAA (disambiguation)
- AAAA (disambiguation)
- Aabach (disambiguation)
- Grosse Aa (disambiguation)
- Kleine Aa (disambiguation)
- A Aa, a film
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