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[ov-yuh-leyt, oh-vyuh-leyt-] /ˈɒv yəˌleɪt, ˈoʊ vyəˌleɪt-/
verb (used without object), ovulated, ovulating. Biology
to produce and discharge eggs from an ovary or ovarian follicle.
1860-65; ovule + -ate1
Related forms
ovulation, noun
[ov-yuh-luh-tawr-ee, -tohr-ee, oh-vyuh-] /ˈɒv yə ləˌtɔr i, -ˌtoʊr i, ˈoʊ vyə-/ (Show IPA),
multiovulate, adjective
multiovulated, adjective
preovulatory, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for ovulation
  • This edema decreases following ovulation, and the muscular tone increases.
  • In severe cases, malnutrition disrupts ovulation and causes amenorrhea.
British Dictionary definitions for ovulation


(intransitive) to produce or discharge eggs from an ovary
Derived Forms
ovulation, noun
Word Origin
C19: from ovule
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ovulation

1848, from Modern Latin ovulum (see ovule) + -ation.



1888, back-formation from ovulation. Related: Ovulated; ovulating.

Online Etymology Dictionary, © 2010 Douglas Harper
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ovulation in Medicine

ovulation o·vu·la·tion (ō'vyə-lā'shən, ŏv'yə-)
The discharge of an ovum from the ovary.

ovulate o·vu·late (ō'vyə-lāt', ŏv'yə-)
v. o·vu·lat·ed, o·vu·lat·ing, o·vu·lates
To produce ova; discharge eggs from the ovary.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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ovulation in Science
  (ō'vyə-lā'shən, ŏv'yə-lā'shən)   
The release of an egg cell (ovum) from the ovary in female animals, regulated in mammals by hormones produced by the pituitary gland during the menstrual cycle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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ovulation in Culture
ovulation [(ov-yuh-lay-shuhn, oh-vyuh-lay-shuhn)]

The periodic release of an ovum from the ovaries (usually from only one ovary). After the ovum is released, it travels into the fallopian tube, and from there is moved to the uterus. Ovulation generally happens approximately two weeks into the menstrual cycle.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Article for ovulation

release of a mature egg from the female ovary; the release enables the egg to be fertilized by the male sperm cells. Normally, in humans, only one egg is released at one time; occasionally, two or more erupt during the menstrual cycle. The egg erupts from the ovary on the 14th to 16th day of the approximately 28-day menstrual cycle. If not fertilized, the egg is passed from the reproductive tract during menstrual bleeding, which starts about two weeks after ovulation. Occasionally, cycles occur in which an egg is not released; these are called anovulatory cycles.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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