radar detector

noun

plural radar detectors
1
: a device designed to alert the operator of a vehicle when it has been targeted by a radar beam (as from a police officer's radar gun)
After fastening a radar detector to the windshield, he slaloms through traffic at illegal speeds for the seven-mile trip to Chrysler's Styling Dome …—Alex Taylor III
He chuckled about the radar detector in his big station wagon … saying he never drove faster than 60 anyway.—Stephan Wilkinson
2
: radar gun
The officer's radar detector recorded the vehicle speed between 55 and 60 mph, with the speed reaching 70 mph at one point on the 55 mph-limit roadway.—Robin Baumgarn

Examples of radar 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.
Cincinnati philanthropist and radar detector pioneer Michael Valentine died unexpectedly Monday at his home, according to his obituary. — Cameron Knight, The Enquirer, 20 Sep. 2024 In other words, use a radar detector because everyone around them is still driving 85. — Scott Dochterman, The Athletic, 22 Aug. 2024 Aftermarket parts like an Alpine stereo linked with amplifiers and a subwoofer live in the trunk, and a Viper radar detector has been added to ward off any unwanted attention. — Jack Fitzgerald, Car and Driver, 26 Apr. 2023

Word History

First Known Use

1960, in the meaning defined at sense 1

Time Traveler
The first known use of radar detector was in 1960

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Cite this Entry

“Radar detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radar%20detector. Accessed 26 Sep. 2026.

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