Source : WordNet®

hypothalamic releasing factor
     n : any of several hormones produced in the hypothalamus and
         carried by a vein to the anterior pituitary gland where
         they stimulate the release of anterior pituitary
         hormones; each releasing hormone causes the anterior
         pituitary to secrete a specific hormone [syn: {releasing
         hormone}, {RH}, {releasing factor}, {hypothalamic
         releasing hormone}]