o·vu·la·tion (vy-lshn, vy-)
n.
The discharge of an ovum from the ovary.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Ovulation
The phase of the female monthly cycle when a developed egg is released from the ovary into the fallopian tube for possible fertilization.
Mentioned in: Contraception, Dysmenorrhea, Emergency Contraception, Hormone Replacement Therapy, Infertility Therapies, Menopause, Ovarian Cysts, Recurrent Miscarriage
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
ovulation
[ov′yəlā′shən]
Etymology: L, ovum + atio, process
expulsion of an ovum from the ovary on spontaneous rupture of a mature follicle as a result of cyclic ovarian and pituitary endocrine function. It usually occurs on or about the eleventh to the fourteenth day before the next menstrual period and may cause brief, sharp lower abdominal pain on the side of the ovulating ovary. See also oogenesis. ovulate [ov′yə′lāt] , v.
Mosby's Medical Dictionary, 8th edition. © 2009, Elsevier.
ovulation
the discharge of the ovum from the graafian follicle.
The discharged ovum enters the uterine tube adjoining the ovary and moves toward the uterus; if it encounters a spermatozoon while it is still alive (about 48 hours), the two merge. Fertilization usually takes place in the uterine tube. The fertilized ovum then makes its way to the uterus, where it becomes embedded in the prepared wall as the first stage of growth of the embryo. See also estrus, estrous cycle.
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