AC
AC may stand for:
- in electricity, the abbreviation of alternating current
- in history, Latin ante Christum, that is to say before Christ; see BCE
- in medicine, a chemotherapy regime comprising adriamycin and cyclophosphamide, see AC chemotherapy
- Atlantic College, one of the ten United World Colleges
- an automobile brand, see AC Cars
- adult contemporary music
- a misprint of Ac, the chemical symbol for actinium
- an Anonymous Coward on Slashdot
- the postnominal letters for the Companion in the Order of Australia
- Air Canada
- air conditioning
- Alt Cataclius, "After Cataclysm" on the Dragonlance Timeline.
- in Dungeons and Dragons, the abbreviation of Armor Class.
In Isaac Asimov's "The Last Question", a short story, AC is the ultimate computer at the end of time.
See also
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