Coitus interruptus
A method of contraception, also called withdrawal, in which the man withdraws his penis from the vagina before ejaculation. Fertilization is prevented because the sperm do not enter the vagina. The effectiveness of this maneuver depends on the man's ability to withdraw before the ejaculation of any sperm. Withdrawal does not provide protection from sexually transmitted diseases (STDs) such as HIV. Infectious diseases can be transmitted by direct contact with surface lesions and by pre-ejaculatory fluid.
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coitus in·ter·rup·tus -.int-ə-'rəp-təs n coitus in which the penis is withdrawn prior to ejaculation to prevent the deposit of sperm in the vagina
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a contraceptive method in which the penis is removed from the vagina before ejaculation of semen (
orgasm). The method is unreliable (10-20 pregnancies per 100 woman-years) and it may lead to sexual disharmony and anxiety in one or both partners.
Medical dictionary.
2011.