Tra từ rhythm method of birth control - Từ điển WordNet v3.1

Từ điển WordNet v3.1 - WordNet Dictionary

rhythm method of birth control

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)
• Syn:
rhythm method, rhythm, calendar method of birth control, calendar method
• Hypernyms:
natural family planning