smoke detector

noun

: an alarm that activates automatically when it detects smoke

called also smoke alarm

Examples of smoke detector 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.
Thanks to working smoke detectors, all six people in the home were able to escape before emergency crews arrived. Rachel Roberts, Idaho Statesman, 8 Apr. 2026 Flat Can Recycling will recycle household items for a fee at the event, including latex paint cans, household batteries, aerosol products, propane tanks, carbon monoxide and smoke detectors and car seats, according to organizers. Aurora Beacon-News, Chicago Tribune, 8 Apr. 2026 Safety regulations were made as a result of the tragedy, including smoke detectors in the lavatory and running lights on the floors. Jeff Suess, Cincinnati Enquirer, 22 Mar. 2026 Willacy later doused Sather in gasoline, disabled the smoke detectors in the home, and placed a fan at her feet to provide oxygen to the ensuing fire. News Service Of Florida, Sun Sentinel, 13 Mar. 2026 See All Example Sentences for smoke detector

Word History

First Known Use

circa 1927, in the meaning defined above

Time Traveler
The first known use of smoke detector was circa 1927

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Cite this Entry

“Smoke detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/smoke%20detector. Accessed 14 Apr. 2026.

Kids Definition

smoke detector

noun
: an alarm that activates automatically when it detects smoke

called also smoke alarm

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