accelerant

noun

ac·​cel·​er·​ant ik-ˈse-lə-rənt How to pronounce accelerant (audio)
ak-
: a substance used to accelerate a process (such as the spreading of a fire)

Examples of accelerant 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.
Court documents say several videos appear to show Niehaus using an accelerant, as well as a small, blow torch. Kevin Grasha, Cincinnati Enquirer, 3 Oct. 2025 Authorities said the suspect had possibly used an accelerant, most likely gasoline, to start the fire. Becca Longmire, PEOPLE, 29 Sep. 2025 An accelerant, possibly gasoline, was likely used to start the church blaze, according to an agent with the federal Bureau of Alcohol, Tobacco, Firearms and Explosives. Frank Witsil, Freep.com, 29 Sep. 2025 Sanford used an accelerant, like gasoline, police believe, to light the church house on fire, said James Deir, special agent in charge of the Detroit field division of the Bureau of Alcohol, Tobacco, Firearms and Explosives. Holly Yan, CNN Money, 29 Sep. 2025 See All Example Sentences for accelerant

Word History

First Known Use

1824, in the meaning defined above

Time Traveler
The first known use of accelerant was in 1824

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Cite this Entry

“Accelerant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/accelerant. Accessed 8 Oct. 2025.

Last Updated: - Updated example sentences
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