ˌvāzōˈpres ə n, -āsō-, ˌvazo-, ˌvasō- noun
( -s )
Etymology: from Vasopressin, a trademark
: a polypeptide hormone that is secreted together with oxytocin by the posterior lobe of the pituitary, that is also obtained synthetically, that increases blood pressure in mammals and exerts an antidiuretic effect, and that is used especially in treating diabetes insipidus