phenoxybenzamine
noun
phe·noxy·ben·za·mine
| \ -ˈben-zə-ˌmēn
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Medical Definition of phenoxybenzamine
: a drug that blocks the activity of alpha-receptors and is used in the form of its hydrochloride C18H22ClNO·HCl especially to treat hypertension and sweating due to pheochromocytoma