metal detector

noun

plural metal detectors
: a device that detects the presence of hidden metal: such as
a
: a security device that scans individuals for dangerous objects (such as weapons)
I boarded the plane armed with several frying thermometers, which set off the metal detectorJeffrey Steingarten
Once inside the theater, the crowd had to pass through an airport-style metal detector as a security precaution.Richard Zoglin
b
: a handheld apparatus that uses electrical induction (see induction sense 4c) to detect the presence of metallic objects (such as coins or jewelry) buried a short distance underground
A local man using a metal detector stumbled upon the site last March. He found two copper brooches, or pins, measuring four inches across.Time for Kids

Examples of metal detector in a Sentence

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.
Everyone will pass through metal detectors upon entry. Jennie Key, The Enquirer, 30 Aug. 2025 The district has so far abstained from installing traditional weapon detection methods including metal detectors, which Bagdasarian said can create the stigma of a prison-like atmosphere. Olivia Stevens, Chicago Tribune, 29 Aug. 2025 The school, with a student body of 2,850, is equipped with metal detectors already and a school security officer. Charna Flam, People.com, 20 Aug. 2025 During the first day last year, the metal detectors were constantly going off due to water bottles, binder notebooks and tablets and other devices. Scott Travis, Sun Sentinel, 11 Aug. 2025 See All Example Sentences for metal detector

Word History

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of metal detector was in 1880

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Cite this Entry

“Metal detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/metal%20detector. Accessed 6 Sep. 2025.

Last Updated: - Updated example sentences
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