English noun: rhythm method | |||
1. | rhythm method (act) 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) | ||
Synonyms | calendar method, calendar method of birth control, rhythm, rhythm method of birth control | ||
Broader (hypernym) | natural family planning | ||