[yoo r-uh-theyn]

noun Chemistry.

any derivative of carbamic acid having the formula CH2NO2R.
Also called ethyl carbamate, ethyl urethane. a white, crystalline, water-soluble powder, C3H7NO2: used chiefly as a solvent, in organic synthesis, as a fungicide and pesticide, and formerly in cancer treatment.

Also u·re·than [yoo r-uh-than] /ˈyʊər əˌθæn/.

Origin of urethane

< French uréthane (1833); see urea, ethane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for urethane

Historical Examples of urethane

British Dictionary definitions for urethane


urethan (ˈjʊərɪˌθæn)


short for polyurethane
another name for ethyl carbamate

Word Origin for urethane

C19: from uro- 1 + ethyl + -ane
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for urethane

1838, from French uréthane (Dumas, 1833), from urea + ethane.

Online Etymology Dictionary, © 2010 Douglas Harper

urethane in Science



A colorless or white crystalline compound used in organic synthesis. Formerly it was also used to relieve symptoms associated with leukemia. Also called ethyl carbamate. Chemical formula: C3H7NO2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.