a.a.
or aa
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A.A.
- Alcoholics Anonymous.
- antiaircraft.
- antiaircraft artillery.
- Associate in Accounting.
- Associate of Arts.
- author's alteration.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Word Origin and History for a.a.
A.A.
also AA, abbreviation of Alcoholics Anonymous, attested by 1941, American English. The group name was the title of a book published in 1938 by the founder, Bill W.
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Online Etymology Dictionary, © 2010 Douglas Harper