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aa

abbreviation
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Definition of aa

ana

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1

AA

noun \ ˈdə-bəl-ˈā \

Definition of AA

plural AAs
: aa battery

First Known Use of aa

1937

2

AA

abbreviation

Definition of AA

1 administrative assistant
2 Alcoholics Anonymous
3 antiaircraft
4 associate in arts
5 author's alterations

See AA defined for English-language learners

Medical Dictionary

āā

abbreviation
variants: also aa

medical Definition of āā

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

Origin and Etymology of āā

Latin ana

AA

abbreviation

medical Definition of AA

1 achievement age
2 Alcoholics Anonymous
3 arachidonic acid

Learn More about aa

  1. Britannica.com: Encyclopedia article about aa

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