Also called human chorionic gonadotropin. Biochemistry. a hormone, produced in the incipient placenta of pregnant women, that stimulates the production of estrogen and progesterone: its presence in blood or urine is an indication of pregnancy.
Pharmacology. a commercial form of this substance, obtained from the urine of pregnant mares, used in medicine in the treatment of testicular disorders and functional uterine bleeding, and in veterinary medicine in the treatment of cystic ovaries, especially in cows and mares.

chorionic gonadotropin n.
Abbr. CG
A glycoprotein that is produced by the placenta and is excreted in the urine of pregnant women, and that acts to stimulate ovarian secretion of the estrogen and progesterone that are required to maintain the conceptus; it is used as an aid for conception and in the treatment of cryptorchidism. Also called anterior pituitary-like hormone, chorionic gonadotropic hormone, human chorionic gonadotropin.


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