- (n.) 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.
- (n.) 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.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). urethane. Retrieved September 23, 2026, from http://smartdefine.org/urethane/definitions/2078248 |
| Chicago | Webster's. 2011. "urethane" http://smartdefine.org/urethane/definitions/2078248 (accessed September 23, 2026). |
| Harvard | Webster's 2011, urethane, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/urethane/definitions/2078248>. |
| MLA | Webster's. "urethane" 28 May 2011. Web. 23 September 2026. <http://smartdefine.org/urethane/definitions/2078248> |