Urethane
Pronunciation : U*reth"ane
Part of Speech : n.
Definition : Defn: A white crystalline substance, NH2.CO.OC2H5, produced by the action of ammonia on ethyl carbonate. It is used somewhat in medicine as a hypnotic. By extension, any one of the series of related substances of which urethane proper is the type.
(Chem.)
Source : Webster's Unabridged Dictionary, 1913