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

Additionally, the thermal insulation installed beneath the cladding — made of polyurethane foam — was also combustible and helped the fire spread, as did other construction materials. —Time, 20 June 2025

An extra perk is its two sides for two stages: firm for babies, and a plusher side for toddlers so one mattress can suit your child through their first few years, free of polyurethane foam and flame retardants. —Julia Harrison, Architectural Digest, 20 May 2025

Mats with polyurethane foam cores or bottom layers tend to have identification load deflection/indentation force deflection numbers, which measure the foam’s firmness. —Bestreviews, Chicago Tribune, 16 May 2025

Everything from polyurethane foams with formaldehyde and TCEP (a flame retardant) to phthalates can end up in nonorganic mattresses, off-gassing into your home. —Scott Gilbertson, Wired News, 16 June 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