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.
The board approved the implementation of metal detectors for the 2025-26 school year. Madeleine Parrish, AZCentral.com, 6 July 2025 Footage from the day in question shows attendees rushing the entrances, barreling past security, and knocking over metal detectors. Randall Colburn, EW.com, 10 June 2025 The high school did have active metal detectors on the day of the shooting. Alexis Simmerman, Austin American Statesman, 10 June 2025 In just the past few months, a Romanian man used a metal detector to uncover an ancient hoard of Roman coins. Mack Degeurin, Popular Science, 15 May 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 20 Jul. 2025.

Last Updated: - Updated example sentences
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