supercritical

adjective

su·​per·​crit·​i·​cal ˌsü-pər-ˈkri-ti-kəl How to pronounce supercritical (audio)
: being or having a temperature above a critical temperature
supercritical fluid

Examples of supercritical in a Sentence

Recent Examples on the Web
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The carbon dioxide might be transported as a supercritical gas – which is right at the phase change from liquid to gas and has the properties of both – or dissolved in a liquid. Ramesh Agarwal, The Conversation, 2 Dec. 2025 China has launched the world's first commercial supercritical carbon dioxide (sCO2) power generator, an innovative clean-energy breakthrough developed by the China National Nuclear Corporation (CNNC). Sam Stevenson, MSNBC Newsweek, 25 Nov. 2025 The Nuclear Power Institute of China had been working on the supercritical carbon dioxide power generator for over a decade. Abhishek Bhardwaj, Interesting Engineering, 25 Nov. 2025 Weeks after this interview, and after this story went to print, New Balance introduced Infinion, a new supercritical foam that will debuted on the 1080v15. Ian Servantes, Footwear News, 12 Nov. 2025 See All Example Sentences for supercritical

Word History

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of supercritical was in 1934

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Cite this Entry

“Supercritical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supercritical. Accessed 20 Dec. 2025.

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