corpus luteum

corpus luteum

[kawr-puhs loo-tee-uhm]
noun, plural corpora lutea [kawr-per-uh loo-tee-uh] .
1.
Anatomy, Zoology. a ductless gland developed within the ovary by the reorganization of a Graafian follicle following ovulation.
2.
Pharmacology. an extract of this gland, usually of the hog or cow, the chief product of which is progesterone.

Origin:
1780–90; < Neo-Latin: yellow body

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World English Dictionary
corpus luteum (ˈluːtɪəm)
 
n , pl corpora lutea
a yellow glandular mass of tissue that forms in a Graafian follicle following release of an ovum. It secretes progesterone, a hormone necessary to maintain pregnancy
 
[New Latin, literally: yellow body]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

corpus luteum corpus lu·te·um (lōō'tē-əm)
n.
A yellow, progesterone-secreting mass of cells that forms from a Graaffian follicle after the release of a mature egg.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
corpus luteum   (l'tē-əm)  Pronunciation Key 
Plural corpora lutea
A yellow mass of cells that forms from a mature ovarian follicle after ovulation and that secretes progesterone. If fertilization of the egg occurs, the corpus luteum persists for the first few months of pregnancy.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

corpus luteum

yellow, hormone-secreting body in the female reproductive system. It is formed in an ovary at the site of a follicle, or sac, that has matured and released its ovum, or egg. The "yellow body" secretes progesterone, a hormone that causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. If the egg is not fertilized, the corpus luteum becomes inactive after 10-14 days and menstruation occurs. See also ovary; ovulation.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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