aa

abbreviation

Definition of aa

  1. ana


1

AA

play
noun \ˈdə-bəl-ˈā\

Definition of AA

plural

AAs

First Known Use of aa

1937


2

AA

abbreviation

Definition of AA

  1. 1 administrative assistant

  2. 2 Alcoholics Anonymous

  3. 3 antiaircraft

  4. 4 associate in arts

  5. 5 author's alterations


Medical Dictionary

AA

abbreviation

Medical Definition of AA

  1. 1achievement age

  2. 2Alcoholics Anonymous

  3. 3arachidonic acid


Learn More about aa


Seen and Heard

What made you want to look up aa? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

lacking social experience or grace

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!