releasing hormone

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun endocrinology Any of many hormones secreted by the hypothalamus that are involved primarily in regulating the release of another hormone.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland
• noun 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 of these hormones causes the anterior pituitary to secrete a specific hormone