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gonadotropin go·nad·o·tro·pin (gō-nād'ə-trō'pĭn, -trŏp'ĭn) or go·nad·o·tro·phin (-trō'fĭn, -trō'pĭn)
A hormone that stimulates the growth and activity of the gonads, especially any of several pituitary hormones that stimulate the function of the ovaries and testes. Also called gonadotropic hormone.