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.
This open system, with unlimited coolant at ambient temperature, and with a high thermal differential, required only a very low flow rate (to avoid overcooling). New Atlas, 31 Oct. 2024 Rather than use water as the reactor coolant – as is used in traditional nuclear reactors – Kairos Power uses molten fluoride salt. Pippa Stevens, CNBC, 14 Oct. 2024 Without coolant, the telescope could no longer obtain high-quality science data in two of its four observing wavelength bands. Meghan Bartels, Scientific American, 31 July 2024 In addition, these coolants can have problems of their own. David Szondy, New Atlas, 24 July 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 28 Nov. 2024.

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!