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.
Officials say the home had smoke detectors, which woke up the mother. Jesse Zanger, CBS News, 27 May 2026 In the living space, change your air filters regularly and maintain your smoke detector. Sherri Gordon, Health, 25 May 2026 That six-story building has had 117 open violations, which include defective self-closing doors on the fourth and sixth floors and nonfunctioning smoke detectors and carbon monoxide detectors, city records show. Emma Seiwell, New York Daily News, 14 May 2026 Think more even heat, better tasting meals, and less chance of smoke detectors going off mid-dinner, among other benefits. Quincy Bulin, Southern Living, 6 May 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 3 Jun. 2026.

Kids Definition

smoke detector

noun
: an alarm that activates automatically when it detects smoke

called also smoke alarm

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