The rhythm method is a practice in which a couple try to prevent pregnancy by having sex only at times when the woman is not likely to become pregnant.
rhythm method in British English
noun
a method of controlling conception without the aid of a contraceptive device, by restricting sexual intercourse to those days in a woman's menstrual cycle on which conception is considered least likely to occur
See also safe period
rhythm method in American English
a method of seeking birth control by abstaining from sexual intercourse during the woman's probable monthly ovulation period
Examples of 'rhythm method' in a sentence
rhythm method
When they heard that she and Jimmy practiced the rhythm method, she was immediately handed a packet of the Pill.
Caroline Upcher, With James LaGarenne and Nanci LaGarenne WITHIN A WHISPER (2001)