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 Each detector, which includes two towers and a floor mount, costs about $16,480. Jimena Tavel, Miami Herald, 23 Apr. 2024 This, finally, inspired Ken to dust off his cheap detector, to venture beyond his own yard. Théoden Janes, Charlotte Observer, 15 Apr. 2024 In other areas downtown where parks and businesses have planned viewing events for the draft, like Grand Circus Park, Detroit police will also install its weapon detectors, Fulgenzi said. Andrea May Sahouri, Detroit Free Press, 15 Apr. 2024 Command doesn't require one of those, so it's just turned off and hanging on the wall; similarly, the new smoke and monoxide detectors are now installed in the ceiling with the old ones right next to them. PCMAG, 10 Apr. 2024 Airborne observations offer important advantages over current survey approaches that typically involve a worker walking across portions of the landfill with a detector logging locations of high surface concentrations of methane. Aaron Clark, Fortune, 30 Mar. 2024 To improve the road’s safety measures without damaging the tree, the girls install a motion detector that sets off a flashing light to notify drivers when people are crossing the street. IEEE Spectrum, 12 Mar. 2024 If the Custom Home price is simply too high for you, ADT also has a Command System Starter Kit that includes a Command panel, three door or window sensors, and a motion detector. PCMAG, 10 Apr. 2024 By nightfall, the street was crowded with apparently hot merchandise: carbon-monoxide detectors, Leviton tamper-resistant outlets, and, notably, hundreds of heavy spools of copper and electrical wiring, the most expensive of which can retail for more than seven hundred dollars. Paige Williams, The New Yorker, 18 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'detector.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1541, in the meaning defined above

Time Traveler
The first known use of detector was in 1541

Dictionary Entries Near detector

Cite this Entry

“Detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/detector. Accessed 2 May. 2024.

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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