Definition of urethane
1a
: a crystalline compound C3H7NO2 that is the ethyl ester of carbamic acid and is used especially as a solvent and medicinally as an antineoplastic agent
b
: an ester of carbamic acid other than the ethyl ester
2
: polyurethane
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Merriam-Webster unabridged
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Time Traveler for urethane
The first known use of urethane was in 1838
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