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.
Fluids: EVs still use coolant and washer fluid—check your manual for service intervals. Melanie Marshall, San Diego Union-Tribune, 12 June 2025 All of the air conditioners tested use coolants that do not deplete the ozone like the older, more damaging coolants of the past. Julian Chokkattu, Wired News, 12 May 2025 The system is composed of a compact refrigeration unit, which circulates liquid coolant at low pressure through a special cooling cap that the patient wears. Eva Epker, Forbes.com, 29 May 2025 The cooler temperatures and raindrops can act as natural coolants, helping dissipate heat from your body. Alyssa Hui-Anderson, Verywell Health, 21 May 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 19 Jun. 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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