thermoplastic

adjective

ther·​mo·​plas·​tic ˌthər-mə-ˈpla-stik How to pronounce thermoplastic (audio)
: capable of softening or fusing when heated and of hardening again when cooled
thermoplastic synthetic resins
compare thermosetting
thermoplastic noun
thermoplasticity noun

Examples of thermoplastic in a Sentence

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.
Inside, a thermoplastic lining shrugs off moisture, mud, and mystery goo with wipe-clean ease. Boutayna Chokrane, Wired News, 13 June 2025 The invisible aligners are made from flexible thermoplastic material called SmartTrack, which is specifically designed to comfortably fit the mouth, control tooth movements and straighten teeth. Kaleigh Werner, Footwear News, 4 June 2025 The thermoplastic polymer can allegedly plug into existing synthetic fiber manufacturing facilities and is 100 percent recyclable and biodegradable upon end-of-life. Alexandra Harrell, Sourcing Journal, 14 May 2025 The University of Edinburgh Like its American predecessor, the Scottish robot is printed entirely out of soft, flexible thermoplastic polyurethane (TPU). Ben Coxworth may 28, New Atlas, 28 May 2025 See All Example Sentences for thermoplastic

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of thermoplastic was in 1883

Browse Nearby Words

Cite this Entry

“Thermoplastic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermoplastic. Accessed 18 Jun. 2025.

Kids Definition

thermoplastic

adjective
ther·​mo·​plas·​tic ˌthər-mə-ˈplas-tik How to pronounce thermoplastic (audio)
: capable of softening or melting when heated and of hardening again when cooled
thermoplastic synthetic fibers

Medical Definition

thermoplastic

1 of 2 adjective
ther·​mo·​plas·​tic ˌthər-mə-ˈplas-tik How to pronounce thermoplastic (audio)
: capable of softening or fusing when heated and of hardening again when cooled
thermoplastic synthetic resins
thermoplasticity noun
plural thermoplasticities

thermoplastic

2 of 2 noun
: a thermoplastic material

More from Merriam-Webster on thermoplastic

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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