smoke detector

noun
|Updated on: 18 Jul 2018

Definition of smoke detector

: an alarm that activates automatically when it detects smoke called also smoke alarm

Recent Examples of smoke detector from the Web

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

First Known Use of smoke detector

circa 1927

in the meaning defined above

See Words from the same year
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SMOKE DETECTOR Defined for Kids

smoke detector

noun smoke de·tec·tor \ -di-ˈtek-tər \

Definition of smoke detector for Students

: a device that sounds an alarm automatically when it detects smoke


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