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.
Austrian company Tubolito is known for manufacturing bicycle inner tubes from TPU (thermoplastic polyurethane), a high-tech material originally used for smartphone speaker membranes. Maryna Holovnova, New Atlas, 8 May 2026 The team converted plastics such as PET bottles, nylon, and polyurethane into chemical feedstocks that helped drive the production of anilines, an important class of industrial compounds. Neetika Walter, Interesting Engineering, 8 May 2026 Paint exposed wood with an oil or polyurethane-based paint. Mary Marlowe Leverette, The Spruce, 5 May 2026 Even spray polyurethane is taking a hit. Diana Olick, CNBC, 23 Apr. 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 16 May. 2026.

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