combustible

adjective

com·​bus·​ti·​ble kəm-ˈbə-stə-bəl How to pronounce combustible (audio)
1
: capable of combustion
combustible materials, such as paper, leaves, and sawdust
combustible gases
2
: easily excited
a combustible temper
The coach had to keep the combustible players under control.
combustibility noun
combustible noun
combustibly adverb

Examples of combustible in a Sentence

The fuel is highly combustible. don't store oily rags and other combustible materials in a hot attic
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.
There are swift, serpentine vines dexterous enough to snatch Dek’s supplies; combustible little slugs that detonate like grenades when triggered; and exotic flowers that swell up and squirt paralyzing darts when something approaches. Peter Debruge, Variety, 4 Nov. 2025 Hazardous Materials Items such as flammable liquids, chemicals, or combustible materials should never find their place in the bedroom closet. Daley Quinn, Southern Living, 4 Nov. 2025 In the late twentieth century, fire agencies urged homeowners to replace flammable wooden shingles with alternatives such as Spanish tiles, which are made from non-combustible terra-cotta. Ingfei Chen, New Yorker, 22 Oct. 2025 The film’s final reveal is one last turning of the knife in Lapid’s incisive, combustible critique of a country ensnared in the delirium of war. Ryan Lattanzio, IndieWire, 21 Oct. 2025 See All Example Sentences for combustible

Word History

Etymology

borrowed from Medieval Latin combustibilis, from Latin combustus (past participle of combūrere "to destroy with fire, combust") + -ibilis -ible

First Known Use

1529, in the meaning defined at sense 1

Time Traveler
The first known use of combustible was in 1529

Browse Nearby Words

Cite this Entry

“Combustible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/combustible. Accessed 12 Nov. 2025.

Kids Definition

combustible

adjective
com·​bus·​ti·​ble kəm-ˈbəs-tə-bəl How to pronounce combustible (audio)
1
: capable of being burned
2
: catching fire or burning easily
combustibility noun
combustible noun

Medical Definition

combustible

adjective
com·​bus·​ti·​ble kəm-ˈbəs-tə-bəl How to pronounce combustible (audio)
: capable of combustion
combustible anesthetics

More from Merriam-Webster on combustible

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