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.
The sound box had a teardrop shape, just a couple of inches deep, with a golden-brown polyurethane finish that darkened to black at the edges. Tim Parks, New Yorker, 11 Apr. 2026 Inside the cafe, the tables were covered in brightly colored polyurethane tablecloths, also covered with flowers. Roxane Gay, Los Angeles Times, 9 Apr. 2026 The ream claims the process is effective across multiple plastic types, including difficult-to-recycle materials such as nylon and polyurethane, marking a significant advance over existing upcycling methods that are largely limited to PET. Jijo Malayil, Interesting Engineering, 6 Apr. 2026 The handlebar attaches to the scale with a retractable thermoplastic polyurethane cord and features a USB-C port on top for charging the scale's 1,000 mAh battery, which promises five months of power between charges. Andrew Gebhart, PC Magazine, 5 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

Browse Nearby Words

Cite this Entry

“Polyurethane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyurethane. Accessed 15 Apr. 2026.

More from Merriam-Webster on polyurethane

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster