/ Dictionary / Index A AAA: Meaning and Definition of Find definitions for: AAA Pronunciation: [key] Agricultural Adjustment Administration. Amateur Athletic Association. American Automobile Association. antiaircraft artillery. Automobile Association of America. AAA Pronunciation: [key] — Symbol. a proportional shoe width size, narrower than AA. the highest quality rating for a corporate or municipal bond. a battery size for 1.5 volt dry cells: diameter, 0.4 in. (1 cm); length 1.7 in. (4.3 cm). A.A.A. Pronunciation: [key] Amateur Athletic Association. American Automobile Association. Automobile Association of America. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aaa (Thesaurus) aa AAAA Related Content Daily Word Quiz: slough Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language