11 letters · 16 points in Scrabble
noun hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow b
originFrom vasopressor + -in, circa 1927; see details at vasopressor § Etymology.
Etymology from Wiktionary, CC BY-SA 3.0