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sexual union by vagina between male and female; usually applied to the mating process in human beings. adj., adj co´ital.
coitus incomple´tus (coitus interrup´tus) coitus in which the penis is withdrawn from the vagina before ejaculation, a widely used but unreliable method of contraception.
coitus reserva´tus coitus in which ejaculation of semen is intentionally suppressed.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(kō'i-tŭs), Avoid the mispronunciations kō-ē'tus, kō-ī'tus, and koy'tus.
Sexual union between male and female.
Farlex Partner Medical Dictionary © Farlex 2012


Sexual union.
Synonym(s): coition, copulation (1) , pareunia, sexual intercourse.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Metrorrhagia and pain during coition may also indicate a need for Hydrastis.
Holy the Landscape lacks all inhibition: Wind, rain, and flowers enact ecstatic coition. In Vienna, near the opera house, when it's warm.
Extrapolations from the mechanics of heterosexual coition are at the root of such formulations, with "penetrability" constructed as a fundamentally female trait in Roman humor.
Creative perception involves what he calls "a coition...
(31) The Serat takes little interest in the philosophical-mystical intricacies of the impregnation-gestation-birth triad, but as the detailed rules for choosing a sexual partner and performing the sexual act make clear, it emphasises that the act of coition should not be taken lightly.
Forbidden to eat anything derived from coition, except for fish, they were for practical purposes vegetarian.
The Duke of Clarence and the unfortunate Dorothy Jordan are the subject of the masterful simplicity and extreme obscenity of Lubber's Hole (November 1791), and even this is upstaged by the universal simplicity of Fashionable Contrasts (January 1792) which focuses on the feet of Frederica and the Duke of York as they engage in coition after their recent marriage.
While O'Dowd opposed the act of censorship itself, he nevertheless abhorred Rosamond's pleas for 'self-restraining coition for prevention purposes'.
This is probably best seen as the normal operation of conventions that dominated most drama, and much prose fiction, from the Renaissance to the nineteenth century: no honourable gentleman could survive sexual intercourse with a wife who had experienced extramarital coition; no modest woman could fall in love more than once.
[which] is bound up in the organic body." He also noted that the attraction and repulsion between magnets was mutual, with both objects participating equally, and therefore named it "coition." He added, "Orpheus in his hymns narrates that iron is attracted by lodestone as the bride to the arms of her espoused."
Similarly, Gratian notes that church canons from Popes Leo I and Gregory I to his own day suggest that a marriage that is unconsummated by coition can be dissolved under some circumstances, indicating that coitus is a criterion for a perfected marriage.
Throughout literature it is common to show a young man upset to the point of nausea after his first coition; and if in actuality such a reaction is very rare, its not by chance that it is so often described.