\U*reth"ane\, n. [F. ur['e]thane. See {Urea}; {Ether}.]
(Org. Chem.)
A white crystalline substance, {NH2.COOC2H5}, produced by the
action of ammonia on ethyl carbonate or by heating urea
nitrate and ethyl alcohol. It is used as a hypnotic,
antipyretic, and antispasmodic. Hence, any ester of carbamic
acid.

\U*reth"ane\, n. (Chem.)
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.