- a white, crystalline compound, CHNO, produced by the action of ammonia on ethyl carbonate or by heating urea nitrate and ethyl alcohol: it is used as a hypnotic and sedative, a solvent, etc.
- any ester of carbamic acid
Origin of urethaneFrench uréthane ; from urée, urea + éther (; from Classical Latin aether: see ether) + -ane, -ane
- A colorless or white crystalline compound, CO(NH2)OC2H5, used in organic synthesis and formerly as a palliative treatment for leukemia. Also called ethyl carbamate.
- Any of several esters, other than the ethyl ester, of carbamic acid.
Origin of urethaneur(o)–1 + eth(yl) + –ane.
(countable and uncountable, plural urethanes)