in·​com·​bus·​ti·​ble | \ ˌin-kəm-ˈbə-stə-bəl How to pronounce incombustible (audio) \

Definition of incombustible

: not combustible : incapable of being burned

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Other Words from incombustible

incombustibility \ ˌin-​kəm-​ˌbə-​stə-​ˈbi-​lə-​tē How to pronounce incombustible (audio) \ noun
incombustible noun

Examples of incombustible in a Sentence

we keep our important papers in an incombustible safe in the basement
Recent Examples on the Web In October, scientists announced a new prototype of a lithium-ion battery that’s flexible and incombustible, eliminating in one fell swoop two of the biggest safety complaints about these batteries. Caroline Delbert, Popular Mechanics, "What Happens When You Cryogenically Freeze a Car Battery," 2 Dec. 2019 Omnis said combustible Reynobond PE material was safe to use on high rise buildings if the insultation material usually put behind the panels was made of incombustible material such as mineral fibre. Reuters, Fortune, "Arconic ‘Knew’ It Was Supplying Flammable Panels to U.K. Fire Tower," 26 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'incombustible.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of incombustible

15th century, in the meaning defined above

History and Etymology for incombustible

Middle English, probably from Middle French, from in- + combustible combustible

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Time Traveler for incombustible

Time Traveler

The first known use of incombustible was in the 15th century

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Cite this Entry

“Incombustible.” Dictionary, Merriam-Webster, Accessed 26 Jan. 2021.

More from Merriam-Webster on incombustible

Thesaurus: All synonyms and antonyms for incombustible

Nglish: Translation of incombustible for Spanish Speakers

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