nephrogenic diabetes insipidus: diabetes insipidus caused by a failure of the kidney to respond to normal levels of vasopressin
diabetes insipidus: a rare form of diabetes resulting from a deficiency of vasopressin (the pituitary hormone that regulates the kidneys); characterized by the chronic excretion of large amounts of pale dilute urine which results in dehydration and extreme thirst
rho: the 17th letter of the Greek alphabet