ACPronunciation: /eɪˈsiː/Translate AC | into German | into Spanish Definition of AC abbreviation (also a.c.) alternating current: [as modifier]:the AC supply air conditioning:a sedan with power steering and AC Aircraftman. appellation contrôlée:AC Sauvignon and Chardonnay athletic club. (ac.) North American acre:a 22-ac. site before Christ. [from Latin ante Christum] Companion of the Order of Australia. AC in other Oxford dictionaries Definition of AC in the US English dictionary
