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coitus
(koŽĭ-tәs)
sexual union by vagina between male and female; usually applied to the mating process in human beings. adj., coŽital., adj.
coitus incompletus
, coitus interruptus
coitus in which the penis is withdrawn from the vagina before ejaculation, a widely used but unreliable method of contraception.
coitus reservatus
coitus in which ejaculation of semen is intentionally suppressed.

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