The process that results in propulsion of semen from the genital ducts and urethra to the exterior; caused by the rhythmic contractions of the muscles surrounding the internal genital organs and the ischiocavernous and bulbocavernous muscles, resulting in an increase in pressure on the semen in the internal genital glands and the internal urethra. [L. e-iaculo, pp. -atus, to shoot out]
- premature e. during sexual intercourse, too rapid achievement of climax and e. in the male relative to his own or his partner's wishes.
- retrograde e. delivery of semen ejaculate into the bladder; seen in neurologic disease, diabetes, and occasionally after prostate surgery.

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ejac·u·la·tion i-.jak-yə-'lā-shən n the act or process of ejaculating specif the sudden or spontaneous discharging of a fluid (as semen in orgasm) from a duct see PREMATURE EJACULATION

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the discharge of semen from the erect penis at the moment of sexual climax (orgasm) in the male. The constituents of semen are not released simultaneously, but in the following sequence: the secretion of Cowper's glands followed by that of the prostate gland and the spermatozoa and finally the secretion of the seminal vesicle. See also premature ejaculation.

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ejac·u·la·tion (e-jak″u-laґshən) [L. ejaculatio] a sudden act of expulsion, as of the semen. ejaculatory adj

Medical dictionary. 2011.


Look at other dictionaries:

  • Ejaculation — Éjaculation L éjaculation est l expulsion (habituellement en jet) d un liquide biologique, à l approche ou au moment de l orgasme. Chez l homme, l éjaculat est constitué de sperme, alors que chez la femme, il s agit du fluide sécrété par les… …   Wikipédia en Français

  • ÉJACULATION — Émission en jet saccadé d’un à trois millilitres de sperme au paroxysme de l’orgasme masculin. Produite par la contraction des vésicules séminales et de l’ampoule du canal déférent, rythmée par les contractions spasmodiques des muscles qui… …   Encyclopédie Universelle

  • Ejaculation — E*jac u*la tion, n. [Cf. F. [ e]jaculation.] 1. The act of throwing or darting out with a sudden force and rapid flight. [Archaic or Technical] An ejaculation or irradiation of the eye. Bacon. [1913 Webster] 2. The uttering of a short, sudden… …   The Collaborative International Dictionary of English

  • éjaculation — ÉJACULATION. s. fém. Terme de Physique. Émission de la semence avec une certaine force.Éjaculation, se dit aussi d Une prière fervente, et qui part du coeur …   Dictionnaire de l'Académie Française 1798

  • ejaculation — c.1600, of fluids; 1620s, of utterances, from Fr. éjaculation, from éjaculer, from L. ejaculari (see EJACULATE (Cf. ejaculate)) …   Etymology dictionary

  • Ejaculation — Ejaculation, lat. deutsch, Auswerfung, Ausspritzung; Ejaculator, der bei der Ausspritzung des Sperma thätige Muskel; ejaculiren, ausspritzen …   Herders Conversations-Lexikon

  • ejaculation — index outburst Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • ejaculation — [ē jak΄yo͞o lā′shən, ijak΄yo͞o lā′shən; ē jak΄yəlā′shən; i jak′yəlā′shən] n. [see EJACULATE] 1. a sudden ejection of fluid, esp. of semen, from the body 2. a sudden vehement utterance; exclamation 3. R.C.Ch. any very brief private prayer …   English World dictionary

  • Ejaculation — Male ejaculation redirects here. For the female counterpart, see Female ejaculation. For other uses, see Ejaculation (disambiguation). Diagram of …   Wikipedia

  • Éjaculation — L’éjaculation est l’expulsion (habituellement en jet) d’un liquide biologique, à l’approche ou au moment de l’orgasme lors d’un rapport sexuel, d’une masturbation ou d’une pollution nocturne. Chez l’homme, l’éjaculat est constitué de sperme ou de …   Wikipédia en Français

  • ejaculation — /i jak yeuh lay sheuhn/, n. 1. an abrupt, exclamatory utterance. 2. the act or process of ejaculating, esp. the discharge of semen by the male reproductive organs. [1595 1605; EJACULATE + ION] * * * ▪ physiology  the release of sperm cells and… …   Universalium

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