phentolamine

[ fen-tol-uh-meen, -min ]
/ fɛnˈtɒl əˌmin, -mɪn /

noun Pharmacology.

an alpha blocker, C17H19N3O, used to reduce hypertensive states caused by a catecholamine excess, as in the treatment of pheochromocytoma.

Origin of phentolamine

1950–55; phen- + tol(uidine) + -amine; see tolu