ure·​thane | \ ˈyu̇r-ə-ˌthān \
variants: or less commonly urethan \ ˈyu̇r-​ə-​ˌthan \

Definition of urethane

1a : a crystalline compound C3H7NO2 that is the ethyl ester of carbamic acid and is used especially as a solvent and medicinally as an antineoplastic agent
b : an ester of carbamic acid other than the ethyl ester

Examples of urethane in a Sentence

Recent Examples on the Web

Some bus and truck fleets are equipped with urethane shields, for about $1,400 per wheel, that can sweep fallen people aside, said Chris Ferrone, an expert hired by the Lees. Mike Lindblom, The Seattle Times, "Metro says fatal Westlake Avenue bus-pedestrian crash was preventable, agrees to $7.7M settlement," 26 Oct. 2018 Its annual revenue has doubled over the past year, to around $40 million, and the company now offers injection molding capabilities as well as sheet metal fabrication, urethane casting and computer numerical controlled machining. Jennifer Smith, WSJ, "Custom-Parts Marketplace Xometry Raises $25 Million in New Funding," 10 July 2018 Underneath, the performer wears a full-body wicking suit, a carbon-fiber head mount held in place by a soft urethane skin, knee and elbow pads, biking gloves, and a mouth guard. Michael Paulson, New York Times, "The Secret Life of Sven," 26 June 2018 Layers of several urethane molds were combined to create a single highly textured image at the same time crews constructed the sound wall. Zahra Ahmad, azcentral, "Loop 101 expansion threatens gargantuan lizards decorating the Scottsdale freeway," 25 June 2018 The bags are made from an extra-durable thermoplastic urethane that resists tears and scratches. Emily Reed, Outside Online, "Why I Love Collapsible Camping Gear," 18 June 2018 Due to last-minute engineering setbacks — three coats of urethane and gobs of glue have doubled the weight of the cardboard — the Fitchburg plane won’t fly on Tuesday. Graham Ambrose, BostonGlobe.com, "In Fitchburg, a plane that’s not so simple," 11 June 2018 The lifelike deer was made of urethane resin and acrylic. James Charisma, latimes.com, "The hyper-real world of sculptor Erick Swenson comes to life at Honolulu museum," 4 June 2018 Eggshell-white urethane-foam models—scanned to help create the patterns for the wood layers used in stack lamination—line shelves and lie scattered across worktables. Mark Rozzo, Esquire, "Form Follows Freedom," 24 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'urethane.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of urethane

1838, in the meaning defined at sense 1a

History and Etymology for urethane

French uréthane, from ur- ur- entry 1 + éth- eth- + -ane

Keep scrolling for more

Learn More about urethane

Statistics for urethane

Look-up Popularity

Time Traveler for urethane

The first known use of urethane was in 1838

See more words from the same year

Keep scrolling for more

More Definitions for urethane


ure·​thane | \ ˈyu̇r-ə-ˌthān \
variants: or urethan \ -​ˌthan \

Medical Definition of urethane

1 : a crystalline compound C3H7NO2 that is the ethyl ester of carbamic acid and is used especially as a solvent and in anesthetizing laboratory animals

called also ethyl carbamate

2 : an ester of carbamic acid other than the ethyl ester

More from Merriam-Webster on urethane

Rhyming Dictionary: Words that rhyme with urethane

Britannica.com: Encyclopedia article about urethane

Comments on urethane

What made you want to look up urethane? Please tell us where you read or heard it (including the quote, if possible).


esteemed in general opinion

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

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