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.
Apply stain if needed and then laquer, varnish, or polyurethane to match the rest of the floor. Brandee Gruener, Southern Living, 12 Sep. 2025 The company does not use harmful polyurethane foams or toxic fire retardants. Sherrie Nachman, Forbes.com, 7 Sep. 2025 The expert suggests using a sealant such as clear polyurethane, vegetable oil, or petroleum jelly. Maria Sabella, Better Homes & Gardens, 6 Sep. 2025 The soles of the boots are made of tough polyurethane with Vibram cushions. Bestreviews, Mercury News, 5 Sep. 2025 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 17 Sep. 2025.

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