(n)any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber, Syn.polyurethan
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
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 ]