noun Chemistry.
any derivative of carbamic acid having the formula CH 2 NO 2 R.
Also called ethyl carbamate, ethyl urethane. a white, crystalline, water-soluble powder, C 3 H 7 NO 2 : used chiefly as a solvent, in organic synthesis, as a fungicide and pesticide, and formerly in cancer treatment.
Also, urethan [yoor-uh-than] .

< French uréthane (1833); see urea, ethane

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World English Dictionary
urethane or urethan (ˈjʊərɪˌθeɪn, ˈjʊərɪˌθæn)
1.  short for polyurethane
2.  another name for ethyl carbamate
[C19: from uro-1 + ethyl + -ane]
urethan or urethan
[C19: from uro-1 + ethyl + -ane]

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American Heritage
Science Dictionary
urethane (yr'ĭ-thān') also urethan   (yr'ĭ-thān')
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.
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