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.
The design is projected to result in lower fuel operating temperatures while coolant parameters are maintained. Aman Tripathi, Interesting Engineering, 30 Oct. 2025 The brush shown atop the removed air guide (in the image below) covers the coolant line passage between the front-panel radiator mount and the motherboard chamber. PC Magazine, 21 Oct. 2025 The cracks could allow coolant to infiltrate into the block heater to cord interface and leave electrically conductive salt deposits, leading to salt bridges or corrosion that would cause the short circuit, according to the recall report. James Powel, USA Today, 20 Oct. 2025 While solid materials can easily be shaved down, these chambers need to have enough space for coolant to travel through channels. Gwendolyn Rak, IEEE Spectrum, 17 Sep. 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 4 Nov. 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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