[n] 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)
[n] recurring at regular intervals
[n] the arrangement of spoken words alternating stressed and unstressed elements; "the rhythm of Frost's poetry"
[n] the basic rhythmic unit in a piece of music; "the piece has a fast rhythm"; "the conductor set the beat"
[n] an interval during which a recurring sequence of events occurs; "the neverending cycle of the seasons"
The actual sound that results from a line of poetry. Metrical rhythm generally involves precise arrangements of stresses or syllables into repeated patterns called feet within a line.
beat, calendar method, calendar method of birth control, cycle, musical rhythm, regular recurrence, rhythm method, rhythm method of birth control, round, speech rhythm
backbeat, cardiac rhythm, cyclicity, downbeat, guide, heart rhythm, inflection, interval, musical time, natural family planning, periodicity, phase, phase angle, prosody, syncopation, template, templet, time interval, upbeat