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
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He was charged with arson after investigators found signs that an accelerant had been used in the blaze. Shelly Bradbury, Denver Post, 5 Mar. 2026 If and when development picks up, Betancur argues the OPC will have the same effect that The 606 had on Logan Square and Humboldt Park — an accelerant for gentrification already underway in Bronzeville and near the University of Chicago. A.d. Quig, Chicago Tribune, 26 Feb. 2026 Meridian Police Chief Tracy Basterrechea said during a press conference shortly after the incident that responding agencies apparently scared off the suspect before the accelerant was ignited. ABC News, 24 Feb. 2026 In that instance, police found gasoline cans and accelerant, saying the suspect(s) intended to light the building on fire. Statesman Staff, Idaho Statesman, 22 Feb. 2026 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 11 Mar. 2026.

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