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fire·​proof ˈfī(-ə)r-ˌprüf How to pronounce fireproof (audio)
: proof against or resistant to fire


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fireproofed; fireproofing; fireproofs

transitive verb

: to make fireproof

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Example Sentences

Adjective remember to store valuable papers in a fireproof box Verb The building was not fireproofed.
Recent Examples on the Web
Meanwhile, Tynsky locked it in his laundry room, in a fireproof box. Richard Conniff, Smithsonian Magazine, 24 Aug. 2022 No fabric is fireproof, but some are more resilient to heat. oregonlive, 15 Aug. 2022 Businesses quickly rebuilt, this time out of fireproof stone and brick. Susan Glaser, cleveland, 30 June 2022 Earthquake-proof, fireproof, eco-friendly, and as close to the original architecture as possible: Those priorities drove nearly every decision in the couple's renovation. Katy Kiick Condon And Leila Nichols, Better Homes & Gardens, 15 June 2022 In a launch video presenting the fireproof book, Atwood tries and fails to burn a prototype with a flamethrower. Antonia Mufarech, Smithsonian Magazine, 9 June 2022 The fireproof version is being auctioned by Sotheby's New York on Wednesday with a high estimate of $100,000. Megan C. Hills, CNN, 7 June 2022 An overwhelming majority of its buildings were mostly wood, even those that claimed to be fireproof, with exteriors painted to look like stone or marble. New York Times, 8 June 2022 Margaret Atwood’s 1985 dystopian novel was made of fireproof materials and is being sold at auction. Joseph Pisani, WSJ, 25 May 2022
Ditto California, which invested in renewables rather than fireproof its grid and now is beyond out-of-state rescue. WSJ, 4 Jan. 2022 Homeowners seeking to better fireproof their properties can enlist Fire Maps, which uses drones to create 3D images of houses and terrain to pinpoint vulnerabilities. Kevin T. Dugan, Fortune, 30 Sep. 2021 Officials have called on residents to fireproof their homes and businesses, and more communities are participating in the national Firewise program, which aims to reduce wildfire risks. Washington Post, 18 June 2021 The cathedral's massive limestone vaults, designed to fireproof the building's interior, largely held up under the collapse of the burning roof. Jennifer Ouellette, Ars Technica, 25 Nov. 2020 The very fact that firefighting is publicly funded decreases the incentive for WUI residents to fireproof their properties. Elizabeth Weil, ProPublica, 2 Oct. 2020 Rising premiums are pricing people out of their homes despite efforts to fireproof their properties. Carter Evans, CBS News, 1 Nov. 2019 Even as California’s utilities do more to fireproof their lines and transformers, state officials say, the safest course during periods of high heat, dryness and winds may be to turn off power to some lines. Julie Cart, The Mercury News, 30 Aug. 2019 Additional legislation in Sacramento seeks to fireproof the state’s energy infrastructure. Kurtis Alexander,, 17 June 2018 See More

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

Word History

First Known Use


1610, in the meaning defined above


1841, in the meaning defined above

Time Traveler
The first known use of fireproof was in 1610

Dictionary Entries Near fireproof

Cite this Entry

“Fireproof.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2022.

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Kids Definition



fire·​proof ˈfīr-ˈprüf How to pronounce fireproof (audio)
: not easily burned : made safe against fire

More from Merriam-Webster on fireproof

Last Updated: 4 Sep 2022

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