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Medical Term:


Pronunciation: e-jak'yu-la'shun


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]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.