Main entry: rhythm, rhythm method, rhythm method of birth control, calendar method, calendar method of birth control
Definition: natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)
Main entry: regular recurrence, rhythm
Definition: recurring at regular intervals
Main entry: speech rhythm, rhythm
Definition: the arrangement of spoken words alternating stressed and unstressed elements
Usage: the rhythm of Frost's poetry
Main entry: rhythm, beat, musical rhythm
Definition: the basic rhythmic unit in a piece of music
Usage: the piece has a fast rhythm; the conductor set the beat
Main entry: rhythm, cycle, round
Definition: an interval during which a recurring sequence of events occurs
Usage: the never-ending cycle of the seasons