/ Dictionary / Index A AC: Meaning and Definition of Find definitions for: AC Pronunciation: [key] air conditioning. alternating current. Ac Pronunciation: [key] — Chem. Chem. acetate. acetyl. Ac Pronunciation: [key] — Symbol, Chem. actinium. ac Pronunciation: [key] alternating current. ac- Pronunciation: [key] var. ofbefore c and qu: accede; acquire. -ac Pronunciation: [key] var. ofafter Greek noun stems ending in i: cardiac; maniac. A/C Pronunciation: [key] account. account current. air conditioning. A.C. Pronunciation: [key] air conditioning. alternating current. before Christ. Army Corps. Athletic Club. a.c. Pronunciation: [key] air conditioning. alternating current. (in prescriptions) before meals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ac (Thesaurus) Abzug ACA Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language