British English : AC AC is used to refer to an electric current that continually changes direction as it flows. AC is an abbreviation for 'alternating current'. NOUNIn Europe, AC is usually generated at 50 Hz.
the internet domain name for
the chemical symbol for
alternating current Compare DC
Companion of the Order of Australia
appellation d'origine contrôlée: the highest French wine classification; indicates that the wine meets strict requirements concerning area of production, strength, etc See VDQS , vin de pays , vin de table
Aelodau'r Cynulliad: Member of the Assembly (that is, the National Assembly of Wales)