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.
Inside, where there was a persistent smell of coolant, workers manned lathes and extrusion machines, fashioning parts for the prototype. Patrick Sisson, New York Times, 28 Mar. 2025 Each Polestar vehicle keeps its cells as close to optimum temperature as possible using a heat pump and radiators to circulate 20 liters (5.28 gallons) of coolant, about 5 liters (1.32 gallons) of which specifically regulate the battery temps. Michael Teo Van Runkle, Ars Technica, 25 Mar. 2025 The toughest part involved fishing some stiff, thick wire through a space between the coolant tank and a metal bracket (which the manual warned about). Ars Technica, 17 Mar. 2025 When its coolant ran out in September 2010, NASA kept WISE going for a few months in a new guise — NEOWISE — to hunt for near-Earth objects (NEOs) that are visible at the warmer infrared wavelengths that didn't require coolant for the spacecraft to detect them. Keith Cooper, Space.com, 13 Feb. 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 22 Apr. 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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