n.
Pronunciation: - ' e- ˌ fr ē n, -fr ə n
Function: noun
Etymology: phenyl + epin ephrine
Date: circa 1947
: a sympathomimetic agent C 9 H 13 NO 2 that is used in the form of its hydrochloride as a vasoconstrictor, a mydriatic, a nasal decongestant, and by injection to raise the blood pressure