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Contents 1 AA 2 A∴A∴ 3 Aa 4 'A'a 5 aA 6 aa 7 See also

AA, A∴A∴, Aa, 'A'a, aa and aA may refer to:

AA

• AA, a common battery size
• Ace-Ace, in a poker hand
• Aerolíneas Argentinas, an Argentine airline
• Affirmative action, a social policy dealing with underrepresented minorities
• Alcoa, an American aluminum-producing company with the stock ticker symbol AA
• Alcoholics Anonymous, a worldwide fellowship of persons recovering from alcoholism
• American Airlines, a large airline based in Fort Worth, Texas
• American Atheists, an organization advocating for atheists in the United States
• America's Army, a computer game published by the U.S. Army
• Amplitude of accommodation, a measurement of the eye's ability to focus clearly on objects at near distances
• Ann Arbor Railroad, a railroad connecting Ann Arbor, Michigan and Toledo, Ohio in the United States
• Anti-aircraft warfare, a military term for combat against airborne enemies from the ground
• Anti-aliasing, a computer graphics technique
• The U.S. postal abbreviation for Armed Forces Americas
• Aruba (DAFIF 0413 / DIA 65-18 / FIPS PUB 10-4 territory code)
• ASCII art, an artistic medium in which pictures are composed of symbols taken from the ASCII computer character set
• Associate of Arts, a kind of associate's degree
• The Automobile Association, a British motoring organisation
• The Automobile Association (Ireland), an Irish motoring organisation
• AA may also be used within a country to refer to the Automobile Association of that country, such as the New Zealand Automobile Association.
• Class AA, a level in the Farm System of minor league baseball
• Shift JIS art, an artistic medium in which pictures are composed of symbols taken from an extended version of the ASCII computer character set

A∴A∴

• Argenteum Astrum, a magical order created by Aleister Crowley

Aa

• The letter Å, found in several languages including Swedish, Norwegian and Danish, which can be alternatively transcribed as "aa"
• Aa (plant), a genus of orchid
• Aa, Estonia, a village on northern coast of Estonia
• Aa River (or Å River), the name of several waterways in Europe
• Petrus van der Aa (1530–1594), a Flemish jurist
• Pieter van der Aa (1659–1733), a Dutch publisher

'A'a

• 'A'a, one of three basic types of lava flow

aA

• attoampere, an SI unit of electric current (equal to 10⁻¹⁸ A)
• Abampere, the CGS unit of current

aa

• Afar language (ISO 639 alpha-2 language code)
• Authoritative Answer, in DNS a flag for query answer

See also

• Å (disambiguation)
• People with surnames beginning with "Aa"

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