n. 1 a recurrent round or period (of events, phenomena, etc.). b time needed for this. 2 a Physics etc. recurrent series of operations or states. b Electr. = HERTZ. 3 series of related songs, poems, etc. 4 bicycle, tricycle, etc. v. (ling)1 ride a bicycle etc. 2 move in cycles. [Greek kuklos circle]
