n.
Pronunciation: na- ' lo ̇ r- ˌ f ē n
Function: noun
Etymology: N-al lyl + m orphine
Date: circa 1953
: a white crystalline compound C 19 H 21 NO 3 that is derived from morphine and is used in the form of its hydrochloride as a respiratory stimulant to counteract poisoning by morphine and similar narcotic drugs