detector
noun
de·tec·tor
di-ˈtek-tər 
Examples of detector in a Sentence
using metal detectors to improve safety at airports
a motion detector to thwart burglaries
Recent Examples on the Web
China has reportedly started the mass production of a photon detector that can help build quantum radars to track advanced stealth fighters like the F-22 Raptor jet.
—
Abhishek Bhardwaj, Interesting Engineering, 14 Oct. 2025
Gauges at wellheads tell the local stories, just like the carbon dioxide detector atop Hawaii’s Mauna Loa has told the global story since 1958.
—Allen Best, Denver Post, 1 Oct. 2025
One particular problem was the relatively low resolution available from a mass spectrometer on Cassini called the Cosmic Dust Analyzer (CDA), which parsed the chemical composition of puffs of dust from ice grains striking its detectors each time the spacecraft swooped through a plume.
—Jacek Krywko, Scientific American, 30 Sep. 2025
The anterior cingulate cortex, your brain’s conflict detector, becomes hyperactive in ambiguous situations.
—Anne-Laure Le Cunff, Big Think, 29 Sep. 2025
See All Example Sentences for detector
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Abhishek Bhardwaj, Interesting Engineering, 14 Oct. 2025
Gauges at wellheads tell the local stories, just like the carbon dioxide detector atop Hawaii’s Mauna Loa has told the global story since 1958.
—Allen Best, Denver Post, 1 Oct. 2025
One particular problem was the relatively low resolution available from a mass spectrometer on Cassini called the Cosmic Dust Analyzer (CDA), which parsed the chemical composition of puffs of dust from ice grains striking its detectors each time the spacecraft swooped through a plume.
—Jacek Krywko, Scientific American, 30 Sep. 2025
The anterior cingulate cortex, your brain’s conflict detector, becomes hyperactive in ambiguous situations.
—Anne-Laure Le Cunff, Big Think, 29 Sep. 2025
See All Example Sentences for detector
Cite this Entry
“Detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/detector. Accessed 16 Oct. 2025.
Copy CitationKids Definition
detector
noun
de·tec·tor
di-ˈtek-tər
1
: one that detects or warns
a smoke detector
2
: a device in a radio receiver for changing the high-frequency current of radio waves into current that can vibrate a loudspeaker to reproduce the original sound
Medical Definition
detector
noun
de·tec·tor
di-ˈtek-tər
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