phentolamine
noun
phen·tol·amine fen-ˈtä-lə-ˌmēn 
-mən
: an alpha-adrenergic blocking agent C17H19N3O used especially in the diagnosis and treatment of hypertension due to pheochromocytoma
Word History
Etymology
phen- + toluidine + amine
First Known Use
1952, in the meaning defined above
Medical Definition
phentolamine
noun
phen·tol·amine fen-ˈtäl-ə-ˌmēn, -mən
: an alpha-adrenergic blocking agent that is administered by injection in the form of its mesylate C17H19N3O·CH4O3S especially in the diagnosis and treatment of hypertension due to pheochromocytoma see regitine
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