aa

abbreviation (1)

Definition of aa 

(Entry 1 of 3)

ana

AA

noun
\ˈdə-bəl-ˈā \
plural AAs

Definition of AA (Entry 2 of 3)

AA

abbreviation (2)

Definition of AA (Entry 3 of 3)

1 administrative assistant

2 Alcoholics Anonymous

3 antiaircraft

4 arachidonic acid

5 associate in arts

6 author's alterations

First Known Use of aa

Noun

1937, in the meaning defined above

History and Etymology for aa

Abbreviation

Latin ana

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Dictionary Entries near aa

A1C

A2-horizon

AA

aa

AAA

AAA battery

AAA cell

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Time Traveler for aa

The first known use of aa was in 1937

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More Definitions for aa

variants: also aa

Medical Definition of āā 

(Entry 1 of 2)

of each used at the end of a list of two or more substances in a prescription to indicate that equal quantities of each are to be taken

Medical Definition of AA (Entry 2 of 2)

2 Alcoholics Anonymous

More from Merriam-Webster on aa

Britannica.com: Encyclopedia article about aa

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