Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun calendar_method_of_birth_control

1 sense of calendar method of birth control

Sense 1
rhythm method of birth control, rhythm method, rhythm, calendar method of birth control, calendar method -- (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))
       => natural family planning -- (any of several methods of family planning that do not involve sterilization or contraceptive devices or drugs; coitus is avoided during the fertile time of a woman's menstrual cycle)