A current which periodically changes or reverses its direction of flow, especially an electric current that reverses direction sinusoidally, as is used for most domestic and industrial power requirements. Contrasted with direct curent.
the type of electricity that comes from a wall outlet (AC), as opposed to direct current (DC). It is used in flash thermolysis and certain types of electric tweezers
(AC) An electric current that periodically reverses direction of electron flow. The rate at which a full cycle occurs in a given unit of time (generally a second) is called the frequency of the current.