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Synonyms

smoke detector

American  

noun

  1. an electronic fire alarm that is activated by the presence of smoke.


Etymology

Origin of smoke detector

First recorded in 1925–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Orion spacecraft that transported the crew during their voyage ran into several glitches, including a smoke detector going off near the end of the trip.

From The Wall Street Journal • Apr. 16, 2026

Lowe said he grabbed a dishrag and tried to wave the smoke away from the smoke detector — only to have Moose start nipping at the rag and at his finger “aggressively.”

From Los Angeles Times • Mar. 18, 2025

Cooking a burger in the oven feels odd, and pan-searing on high heat risks setting off the smoke detector.

From Salon • Mar. 8, 2025

He said the smoke detector may not have sounded because the door of the bedroom was closed.

From BBC • Nov. 18, 2024

In the first she flew up to the ceiling and began puffing at the smoke detector mounted above his door.

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville