non·​flam·​ma·​ble ˌnän-ˈfla-mə-bəl How to pronounce nonflammable (audio)
: not flammable
specifically : not easily ignited and not burning rapidly if ignited
nonflammability noun

Example Sentences

children's pajamas made of nonflammable fabric
Recent Examples on the Web Novec is nonflammable and does not harm atmospheric ozone, and 3M says the gas has low toxicity. Phil Mckenna, NBC News, 21 Sep. 2022 The fire of that era also destroyed most of the Near North Side of the city, meaning that anything new had to be built in stone or other nonflammable materials. Andrea Sachs, Washington Post, 26 May 2022 The catastrophe led the city to enact new codes: Decorations would now be nonflammable, and after the tragic example set by the club’s cramped revolving door, exit doors would now open outward., 3 Mar. 2022 Fuel tanks were insulated with nonflammable material to prevent explosions, and backup systems were in place for various hydraulic and mechanical components. Washington Post, 21 Aug. 2021 Each needs a clear space out of the wind and to be situated on a nonflammable surface away from low-hanging trees. Washington Post, 17 July 2020 Ricardo Hallal Fakury, a structural engineer at the Federal University of Minas Gerais, tells Nature News that the building was built with nonflammable materials and equipped with smoke detectors. Theresa Machemer, Smithsonian Magazine, 6 July 2020 Most modern airships use helium, a nonflammable but expensive and rare gas. April White, Smithsonian, 22 Nov. 2019 What’s left is a nonflammable gas that is then transported to market by a 425-mile pipeline that terminates in Bushton, Kan. Stoll says Cliffside has a soul. Laura Garcia,, 21 June 2019 See More

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

Word History

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of nonflammable was in 1898

Dictionary Entries Near nonflammable

Cite this Entry

“Nonflammable.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2022.

Kids Definition



non·​flam·​ma·​ble -ˈflam-ə-bəl How to pronounce nonflammable (audio)
: not flammable
also : not easily ignited and not burning rapidly if ignited
nonflammability noun

More from Merriam-Webster on nonflammable

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