n. Any of various polymeric resins containing urethane links; used in very many industrial and domestic applications.
the GNU version of the Collaborative International Dictionary of English
n. 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.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
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
Word Usage
"The combined seat, its bottom and back frame is a one-piece reinforced moulding upholstered in polyurethane foam."