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[pol-ee-yoo r-uh-theyn, -yoo-reth-eyn] /ˌpɒl iˈyʊər əˌθeɪn, -yʊˈrɛθ eɪn/
noun, Chemistry
a thermoplastic polymer containing the group NHCOO: used for padding and insulation in furniture, clothing, and packaging, and in the manufacture of resins for adhesives, elastomers, and fillers.
Also, polyurethan
[pol-ee-yoo r-uh-than] /ˌpɒl iˈyʊər əˌθæn/ (Show IPA)
Origin of polyurethane
1940-45; poly- + urethane Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for polyurethane
  • They are made from polyurethane plastic, so they'll hold moisture nicely and were a cinch to drill into.
  • Used in polyurethane foam in couches, nursing pillows and strollers.
  • The fabric used on the exterior is a polyester-taffeta blend that features polyurethane mesh and coating.
  • polyurethane and a five-millimeter-thick silicone skin, soft and specially colored, cover a metal skeleton.
  • The new technology first takes polyurethane-the coating on many cars.
  • Look for a polyurethane type instead of any rubber wheels.
  • polyurethane-used in everything from insulation to floor coatings-is made with toxic isocyanates.
  • Rather than using extruded aluminum framing, we're looking at a cast polyurethane mold.
  • The third innovation, a further drag-reduction measure, is that polyurethane panels have been placed in spots on the suit.
British Dictionary definitions for polyurethane


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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for polyurethane

1944, from polymer + urethane.

Online Etymology Dictionary, © 2010 Douglas Harper
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polyurethane in Science
Any of various synthetic resins used to make tough resistant coatings, adhesives, foams, and electrical insulation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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