polyurethane

noun

poly·​ure·​thane ˌpä-lē-ˈyu̇r-ə-ˌthān 

: 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

Large Cracks on Foundation Walls Small hairline cracks in the foundation walls are relatively common and can typically be fixed by the average DIYer using epoxy or polyurethane to seal the cracks. —Timothy Dale, Better Homes & Gardens, 20 Mar. 2025

But this one from Thule is excellent, with a thermoplastic polyurethane divider between its two compartments that prevents dirt, moisture, and odor from transferring from one side to the other. —Ryan Krogh, Outside Online, 5 Mar. 2025

With the coastal climate in mind, a six-layer solvent-free polyurethane coating has been applied to the surface to withstand the harsh weather conditions. —Bridget Borgobello, New Atlas, 23 Feb. 2025

Its durable polyurethane coating can be easily wiped clean. —Adrienne So, WIRED, 13 Feb. 2025

Word History

Etymology

International Scientific Vocabulary

First Known Use

1939, in the meaning defined above

Rhymes for polyurethane

• diazomethane
• dichloroethane
• dichloromethane
• trichloroethane
• abstain
• airplane
• alkane
• arcane
• arraign
• attain
• backplane
• betaine