noun: the arrangement of spoken words alternating stressed and unstressed elements
Example: "The rhythm of Frost's poetry"
noun: the basic rhythmic unit in a piece of music
Example: "The piece has a fast rhythm"
noun: an interval during which a recurring sequence of events occurs
noun: 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)
