detector

noun

de·​tec·​tor di-ˈtek-tər How to pronounce detector (audio)
Synonyms of detectornext
: 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

Synonyms of detector

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.
The chain of events began on August 18, 2025, when LIGO detectors in the US and Virgo in Italy picked up a faint gravitational-wave signal. Neetika Walter, Interesting Engineering, 16 Dec. 2025 Perkins found that some of the most popular AI detectors — including Turnitin, GPTZero and Copyleaks — flagged some things as AI that weren't, and vice versa. Lee V. Gaines, NPR, 16 Dec. 2025 Deadline screenshotted the picture in question and ran it through Hive’s AI detector. Jake Kanter, Deadline, 16 Dec. 2025 LifeTracer is not a universal life detector. Amirali Aghazadeh, The Conversation, 12 Dec. 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 31 Dec. 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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