detector

noun

de·​tec·​tor di-ˈtek-tər How to pronounce detector (audio)
: one that detects: such as
a
: a device for detecting the presence of electromagnetic waves or of radioactivity
b
: a rectifier of high-frequency current used especially for extracting the intelligence from a radio signal

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
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.
Instead, the Large Hadron Collider (LHC) is set to get a brand new detector named MATHUSLA —an acronym for MAssive Timing Hodoscope for Ultra-Stable neutraL pArticles. Neetika Walter, Interesting Engineering, 10 Apr. 2025 There’s light generated from thermal noise, where the fact that the telescope and its instruments are not extremely cold means that additional signals (again, that don’t correspond to real objects) get registered in the detector. Big Think, 9 Apr. 2025 The detector was developed with Tokyo Metropolitan University, Tohoku University, Tohoku Institute of Technology, and Osaka University. Kapil Kajal, Interesting Engineering, 8 Apr. 2025 This substrate forms the core of the new detector architecture. Kapil Kajal, Interesting Engineering, 8 Apr. 2025 See All Example Sentences for detector

Word History

First Known Use

1541, in the meaning defined above

Time Traveler
The first known use of detector was in 1541

Browse Nearby Words

Cite this Entry

“Detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/detector. Accessed 18 Apr. 2025.

Kids Definition

detector

noun
de·​tec·​tor di-ˈtek-tər How to pronounce detector (audio)
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 How to pronounce detector (audio)
: one that detects
especially : a device for detecting the presence of electromagnetic waves or of radioactivity

More from Merriam-Webster on detector

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