gas mask

noun

: a mask connected to a chemical air filter and used to protect the face and lungs from toxic gases
broadly : respirator sense 1

Examples of gas mask in a Sentence

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.
Some also testified about wearing gas masks in their own homes. ABC News, 6 Mar. 2026 The temperature exceeded a hundred degrees, and the smoke was so thick that the little cartoon icon on the air-quality app on my phone—which normally wore a cloth mask when the air was bad—now bore a gas mask. Robert Moor, New Yorker, 2 Mar. 2026 The video shows the suspect in a blue hoodie and gas mask spraying the kitchen with a blue bottle. Sarah Rumpf-Whitten, FOXNews.com, 27 Feb. 2026 Speaking at a news conference after the arrest, Sullivan said Camacho was wearing a tactical vest and gloves and had a Kevlar helmet and gas mask in the vehicle. Gary Fields, Los Angeles Times, 17 Feb. 2026 See All Example Sentences for gas mask

Word History

First Known Use

1915, in the meaning defined above

Time Traveler
The first known use of gas mask was in 1915

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Cite this Entry

“Gas mask.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gas%20mask. Accessed 12 Mar. 2026.

Kids Definition

gas mask

noun
: a mask connected to a chemical air filter and used to protect the face and lungs against harmful gases

Medical Definition

gas mask

noun
: a mask connected to a chemical air filter and used to protect the face and lungs from toxic gases
broadly : respirator sense 1

More from Merriam-Webster on gas mask

Last Updated: - Updated example sentences
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