: A female hormone, progesterone is the principal progestational hormone. Progestational hormones prepare the uterus (the womb) to receive and sustain the fertilized egg.
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An antiestrogenic steroid, believed to be the active principle of the corpus luteum, isolated from the corpus luteum and placenta or synthetically prepared; used to correct abnormalities of the menstrual cycle and as a contraceptive and to control habitual abortion. SYN: luteohormone, pregnancy hormone, progestational hormone.

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pro·ges·ter·one prō-'jes-tə-.rōn n a female steroid sex hormone C21H30O2 that is secreted by the corpus luteum to prepare the endometrium for implantation and later by the placenta during pregnancy to prevent rejection of the developing embryo or fetus also a synthetic steroid resembling progesterone in action

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a steroid hormone secreted by the corpus luteum of the ovary, the placenta, and also (in small amounts) by the adrenal cortex and testes. It is responsible for preparing the inner lining (endometrium) of the uterus for pregnancy. If fertilization occurs it maintains the uterus throughout pregnancy and prevents the further release of eggs from the ovary. See also menstrual cycle, progestogen.

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pro·ges·te·rone (pro-jesґtə-rōn) the principal progestational hormone of the body, liberated by the corpus luteum, placenta, and in minute amounts by the adrenal cortex; it prepares the uterus for the reception and development of the fertilized oocyte by transforming the endometrium from the proliferative to the secretory stage and maintains an optimal intrauterine environment for sustaining pregnancy. [USP] the same principle isolated from pregnant sows or prepared synthetically; used, usually in the form of synthetic derivatives, as a progestational agent in the treatment of dysfunctional uterine bleeding and abnormalities of the menstrual cycle, as part of postmenopausal hormone replacement therapy, as a test for endogenous estrogen production, and as an adjunct in the treatment of infertility due to partial or complete ovarian failure; administered orally, intramuscularly, or intravaginally. Called also progestational hormone.

Medical dictionary. 2011.

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  • Progesterone — Progestérone Progestérone Formule chimique de la progestérone Général No CAS …   Wikipédia en Français

  • Progestérone — Formule chimique de la progestérone Général No CAS …   Wikipédia en Français

  • progestérone — [ prɔʒɛsterɔn ] n. f. • 1941; de pro , lat. gestare et (horm)one ♦ Biochim. Hormone sécrétée par le corps jaune (après l ovulation et pendant la grossesse), ainsi que par le placenta. ⇒vx lutéine. La progestérone prépare la muqueuse utérine à l… …   Encyclopédie Universelle

  • progesterone — progesterone. См. прогестерон. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • progesterone — /prodʒeste rone/ s.m. [comp. di proge(stina ) e ster(olo ), col suff. one2]. (fisiol.) [ormone sessuale femminile, prodotto soprattutto nell ovaio] ▶◀ luteina …   Enciclopedia Italiana

  • progesterone — female steroid sex hormone which prepares the uterus for child bearing, 1935, from Ger. Progesteron, coined by Corner and Allen, from progestin (1930, from which it was obtained), on notion of substance which favors gestation, from pro (see PRO… …   Etymology dictionary

  • progesterone — ► NOUN Biochemistry ▪ a steroid hormone released by the corpus luteum that stimulates the uterus to prepare for pregnancy …   English terms dictionary

  • progesterone — [prō jes′tər ōn΄] n. [ PRO 1 + GE(STATION) + STER(OL) + ONE] a steroid hormone, C21H30O2, secreted by the corpus luteum or prepared synthetically, active in preparing the uterus for the reception and development of the fertilized ovum and the… …   English World dictionary

  • progesterone — /proh jes teuh rohn /, n. 1. Biochem. a hormone, C21H30O2, that prepares the uterus for the fertilized ovum and maintains pregnancy. 2. Pharm. a commercial form of this compound, obtained from the corpus luteum of pregnant sows or synthesized:… …   Universalium

  • progesterone —    This is the hormone secreted after ovulation by the corpus luteum. It is a steroid (a cholesterol with a funny hat), enters receptive cells to stimulate their growth, and acts as an anabolic agent. Estrogen should be viewed as the primary coat …   Herbal-medical glossary

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