Polyurethane is a plastic material used especially to make paint or substances which prevent water or heat from passing through.
...polyurethane varnish.
polyurethane in British English
(ˌpɒlɪˈjʊərəˌθeɪn) or polyurethan (ˌpɒlɪˈjʊərəˌθæn)
noun
a class of synthetic materials made by copolymerizing an isocyanate and a polyhydric alcohol and commonly used as a foam (polyurethane foam) for insulation and packing, as fibres and hard inert coatings, and in a flexible form (polyurethane rubber) for diaphragms and seals
polyurethane in American English
(ˌpɑliˈjurəˌθeɪn)
noun
any of various synthetic polymers produced by the polymerization of a hydroxyl (OH) radical and an NCO group from two different compounds: used in elastic fibers, cushions, insulation, molded products, coatings, etc.
Examples of 'polyurethane' in a sentence
polyurethane
I don't think I wore pants for six months, and if I did wear them they were made out of polyurethane and feathers.