The story
From en- (of unknown origin) + -flurane (“halogenated compound”).
Etymology from Wiktionary, CC BY-SA 4.0.
enflurane
Today it means: 2-chloro-1,1,2,-trifluoroethyl-difluoromethyl ether, a halogenated ether and structural isomer of isoflurane commonly used for inhalational anesthesia during the 1970s and 1980s. Full definition →