coolant

noun

cool·​ant ˈkü-lənt How to pronounce coolant (audio)
: a usually fluid cooling agent

Examples of coolant 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.
It’s housed inside Lawrence Livermore National Laboratory in California, where the $600 million machine is constantly consuming liquid coolant and electricity. Michael Kan, PCMAG, 10 Jan. 2025 When these bundles are placed together in the reactor, they are immersed in water that serves as a moderator and coolant. David Szondy, New Atlas, 28 Dec. 2024 Unlike traditional air cooling — which relies on air conditioners, fans and vents to blow cool air over racks of servers — the technology uses a liquid coolant to absorb and remove heat right where it’s generated. Paulina Likos, CNBC, 12 Oct. 2024 Also unlike a large nuclear reactor, Aurora doesn't require water as a coolant. Benedict Cosgrove, Newsweek, 19 Dec. 2024 See all Example Sentences for coolant 

Word History

First Known Use

1915, in the meaning defined above

Time Traveler
The first known use of coolant was in 1915

Dictionary Entries Near coolant

Cite this Entry

“Coolant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coolant. Accessed 30 Jan. 2025.

Kids Definition

coolant

noun
cool·​ant ˈkü-lənt How to pronounce coolant (audio)
: a usually fluid cooling substance

More from Merriam-Webster on coolant

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!