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polyurethane

noun [U]
 
 
/ˌpɒl.ɪˈjʊə.rə.θeɪn/ US  /ˌpɑː.lɪˈjʊr.ə-/

Definition

a plastic used especially as a type of varnish or as a protection for delicate objectsPlastics and rubber
(Definition of polyurethane noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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