go·nad·o·tro·pin-re·leas·ing hormone 
(gō-năd′ə-trōpĭn-rĭ-lēsĭng, -trŏpĭn-)
(gō-năd′ə-trōpĭn-rĭ-lēsĭng, -trŏpĭn-)n. Abbr. GnRH
A hormone produced by the hypothalamus that signals the anterior pituitary gland to begin secreting luteinizing hormone and follicle-stimulating hormone. Also called luteinizing hormone-releasing hormone.