/ Dictionary / Index A Ab: Meaning and Definition of Find definitions for: Ab Pronunciation: (äb, äv), [key] — n. Av. AB Pronunciation: [key] See airborne. Airman Basic. Alberta, Canada (approved for postal use). antiballistic; antiballistic missile. AB Pronunciation: [key] — Symbol, Physiol. a major blood group usually enabling a person whose blood is of this type to donate blood to persons of type AB and to receive blood from persons of type O, A, B, or AB. Cf. ABO system. Ab Pronunciation: [key] — Symbol. alabamine. antibody. ab- Pronunciation: [key] a formal element occurring in loanwords from Latin, where it meant “away from”: abdicate; abolition. ab. Pronunciation: [key] about. (times) at bat. A.B. Pronunciation: [key] See See (times) at bat. a.b. Pronunciation: [key] — Baseball. Baseball. (times) at bat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ab (Thesaurus) A-axis aba Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language