noun
emergency contraception
Medical term for methods used to prevent pregnancy after unprotected intercourse or contraceptive failure.
緊急避妊は性交後72時間以内に行う必要がある。
Emergency contraception must be used within 72 hours after intercourse.
避妊 is general contraception, while 緊急避妊 specifically refers to emergency use after unprotected sex.
Compound of 緊急 (emergency) and 避妊 (contraception).