coitus interruptus; withdrawal method
Technical term for the contraceptive practice of withdrawing the penis before ejaculation. Used in medical or formal contexts.
Coitus interruptus is not a reliable method of contraception.
Synonymous medical term; 膣外射精 is more explicit about ejaculation outside the vagina, while 中絶性交 emphasizes the interruption of intercourse.
General term for contraception; 中絶性交 is one specific (and unreliable) method.
Compound of 中絶 (interruption) and 性交 (sexual intercourse), literally 'interrupted sexual intercourse'.