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
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Their bathroom floor also pooled with water after showering, and noise from other apartments, like the shrill beeps of a low-battery smoke detector next door, carried through the paper-thin walls. Matthew Sedacca, Curbed, 22 Apr. 2025 The inspector’s report also noted that three tenants that refused entry to maintenance personnel to make any repairs, and two tenants removed smoke detectors that had recently been installed. Cathie Anderson, Sacramento Bee, 23 Jan. 2025 An early Easter morning fire in the New York City borough of Queens killed three people, with fire officials saying there were no working smoke detectors inside the overcrowded home. David Chiu, People.com, 21 Apr. 2025 Also included is a safety package with LP/CO detector, smoke detector, fire extinguisher, My Medic first aid kit and Fenix flashlight. New Atlas, 4 Apr. 2025 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

Browse Nearby Words

Cite this Entry

“Smoke detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/smoke%20detector. Accessed 17 May. 2025.

Kids Definition

smoke detector

noun
: an alarm that activates automatically when it detects smoke

called also smoke alarm

More from Merriam-Webster on smoke detector

Last Updated: - Updated example sentences
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