polyurethane

noun

poly·​ure·​thane ˌpä-lē-ˈyu̇r-ə-ˌthān How to pronounce polyurethane (audio)
: any of various polymers that contain NHCOO linkages and are used especially in flexible and rigid foams, elastomers, and resins (as for coatings)

Examples of polyurethane in a Sentence

The floor will need two coats of polyurethane.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Finishes like polyurethane, varnish, or laminate add a protective topcoat to your cabinets to protect them from substances like grease. Ashlyn Needham, Southern Living, 7 Feb. 2026 This followed the 500th large-group interpretive dance number of the evening, featuring dozens of performers in polyurethane suits doing movement set to a spoken word about how war is, actually, bad. Rebecca Alter, Vulture, 7 Feb. 2026 While the steel springs are easy enough to scrap, the bulky polyurethane foam often ends up in a permanent 120-year home in a landfill. Mrigakshi Dixit, Interesting Engineering, 5 Feb. 2026 Last August, Eastman teamed up with Huafon Chemical, a holding subsidiary of the eponymous group—and one of the largest manufacturers of polyurethane (PU) materials on the global market—on a joint facility to produce cellulose acetate filament yarns. Alexandra Harrell, Sourcing Journal, 5 Feb. 2026 See All Example Sentences for polyurethane

Word History

Etymology

International Scientific Vocabulary

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of polyurethane was in 1939

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Cite this Entry

“Polyurethane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyurethane. Accessed 10 Feb. 2026.

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