combust

verb

com·​bust kəm-ˈbəst How to pronounce combust (audio)
combusted; combusting; combusts
Synonyms of combustnext
: burn

Examples of combust in a Sentence

anthracite, which is naturally hard, combusts more cleanly than bituminous coal
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.
This loss wasn’t last June at the French Open, when the wind and Coco Gauff’s relentless defense caused Sabalenka to combust, first on the court, and then in the news conference after. Matthew Futterman, New York Times, 31 Jan. 2026 Similar to the show, the comic features a pair of detectives trying to connect the dots behind a strain of explosive deaths, and everyone who’s spontaneously combusted has The Beauty. Barry Levitt, Time, 22 Jan. 2026 Put the two together, and, well, the whole great experiment that is the internet might just combust. Sam Reed, Glamour, 12 Jan. 2026 Helsley combusted during his time with the Mets this past summer, but a good chunk of that failure could be chalked up to pitch tipping. Zach Pressnell, MSNBC Newsweek, 26 Nov. 2025 See All Example Sentences for combust

Word History

Etymology

derivative of earlier combust, combusted "burned, consumed," going back to Middle English combust, borrowed from Latin combustus, past participle of combūrere "to destroy with fire, reduce to ashes, calcine," from com- com- + ūrere "to expose to fire, burn, scorch" (with -b- from ambūrere "to burn around, scorch," falsely parsed as am- + būrere) — more at adust

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of combust was in the 15th century

Browse Nearby Words

Cite this Entry

“Combust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/combust. Accessed 15 Feb. 2026.

Kids Definition

combust

verb
com·​bust kəm-ˈbəst How to pronounce combust (audio)
: to be or set on fire : burn
Last Updated: - Updated example sentences
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