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.
Many of France's power stations draw seawater directly from the ocean as coolant for their inner workings. Theo Burman shane Croucher, MSNBC Newsweek, 4 Sep. 2025 But the Storm weighs in at 385 kg (849 lb) before adding in the weight of the cables, coolant and propeller. New Atlas, 29 Aug. 2025 So the high abundance of both molecular coolants earlier on may have allowed smaller clouds to cool faster and collapse to form lower-mass stars. ArsTechnica, 27 Aug. 2025 So the circulation patterns for the reactor’s fluid coolants will need to be recalculated. Emily Waltz, IEEE Spectrum, 22 Aug. 2025 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

Browse Nearby Words

Cite this Entry

“Coolant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coolant. Accessed 9 Sep. 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
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