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Discharge of an ovum or ovule from the ovary.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the discharge of the ovum from the ovary into the body cavity. The follicle that contains the ovum ruptures during ovulation; in humans and mammals it is called the Graafian follicle. Ovulation occurs periodically in females of most vertebrates and in women. In some animals, for example, the rabbit, cat, and polecat, it is triggered by copulation. It is stimulated by gonadotrophic hormones, which are secreted by the pituitary gland and are controlled by the central nervous system. In birds the number of daylight hours is a signal for ovulation; in fish, water temperature.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Factors related to successful ovulation induction in patients with WHO group II anovulatory infertility.
Comparison of efficacy of letrozole and clomiphene citrate in ovulation induction in Indian women with polycystic ovarian syndrome.
Efficacy of letrozole in ovulation induction compared to that of clomiphene citrate in patients with polycystic ovarian syndrome.
racemosa in ovulation induction may be warranted to get a better understanding of the mechanism of action, efficacy, safety and optimal duration of therapy.
(3, 4) Anastrozole, at doses of 1 mg, 5 mg, 10 mg, 20 mg, and 30 mg daily for 5 days, was less effective for ovulation induction in the first cycle of treatment than clomiphene at a dose of 50 mg.
Induction of ovulation by clomiphene citrate in PCOS is another common option of treatment for PCOS but this use is restricted only to ovulation induction as clomiphene basically being an antiestrogen has nothing to do with the pathology of PCOS and it does not address the underlying abnormalities of PCOS including hyperinsulinemia and hyperandrogenism (Guzick 2007).
While in-vitro fertilization receives more attention in discussions of infertility treatment, far more couples achieve pregnancies with the techniques of ovulation induction or combined ovarian stimulation and intrauterine insemination, which further have the advantage of being able to be performed in almost any office or clinic.
It deals with: ovulation induction, IVF, ICSI, embryo freezing, sperm retrieval, sperm donation, egg donation, egg sharing , receiving donated eggs, counselling, pre-pregnancy advice, fertility preservation and a young person's clinic.
Review of data about women who conceived after ovulation induction over the last 2 decades showed high rate of miscarriages with live birth rate of 61%.
The report reviews the evidence for effectiveness and the short-and long-term safety of various interventions used in ovulation induction, super-ovulation, and in vitro fertilization (IVF).
The findings contradict a report presented at last year's conjoint annual meeting of the American Society for Reproductive Medicine and the Canadian Fertility and Andrology Society suggesting that the aromatase inhibitor could cause serious fetal anomalies when used off-label for ovulation induction.