-NHCOO-
Polyurethane Pol"y*ur`eth*ane, n. (Chem.) any polymer containing {[-NH.CO.O-]} linkages; such polymers are much used as the basis of light but rigid foams for packaging (

{polyurethane foam}) and for hard coatings, as on floors. [PJC]


The Collaborative International Dictionary of English. 2000.

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