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A.A.

  1. Alcoholics Anonymous.
  2. antiaircraft.
  3. antiaircraft artillery.
  4. Associate in Accounting.
  5. Associate of Arts.
  6. 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