Vasopressin - Definition
vasopressin
n 1: 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 by affecting
reabsorption of water by kidney tubules [syn:
vasopressin, antidiuretic hormone, ADH, Pitressin]