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.
Four years later, Brunson is a three-time All-NBA member, the captain of a team that is just four victories short of inspiring New York City to combust. Fred Katz, New York Times, 26 May 2026 Watch party or not, the whole city might combust if the Knicks win an NBA Championship. Austin Perry Outkick, FOXNews.com, 23 May 2026 Many times, bodies spontaneously combust and spray blood everywhere. Ethan Shanfeld, Variety, 14 Mar. 2026 The element of surprise has mostly worn off, even if Grace tells Faith that one never really gets used to people spontaneously combusting right in front of you. Angie Han, HollywoodReporter, 14 Mar. 2026 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 1 Jun. 2026.

Kids Definition

combust

verb
com·​bust kəm-ˈbəst How to pronounce combust (audio)
: to be or set on fire : burn
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster