n.
Pronunciation: ' fen-t ə - ˌ nil
Function: noun
Etymology: probably alteration of phenethyl, a monovalent radical derived from ethylbenzine, from phen- + ethyl
Date: 1964
: a synthetic opioid narcotic analgesic C 22 H 28 N 2 O with pharmacological action similar to morphine that is administered especially in the form of its citrate