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radar

noun

ra·​dar ˈrā-ˌdär How to pronounce radar (audio)
often attributive
1
: a device or system consisting usually of a synchronized radio transmitter and receiver that emits radio waves and processes their reflections for display and is used especially for detecting and locating objects (such as aircraft) or surface features (as of a planet)
2
: range of notice
fell off the radar after losing their first three games

Example Sentences

The approaching planes were detected by radar.
Recent Examples on the Web In response to these policy setbacks, drone delivery companies have more recently adopted a less conspicuous strategy for acquiring private airspace rights that is flying under the radar of most property owners. Troy Rule, Fortune, 2 Sep. 2022 Parents should also understand that consensual sharing of intimate images between adolescents, which was barely on the radar of psychologists 15 or so years ago, is no longer seen as developmentally inappropriate, said Rutledge. Elizabeth Chang, Washington Post, 29 Aug. 2022 Not only are there Pac-12 schools on the radar of the Big Ten, but schools such as Arizona, Utah, Colorado and Arizona State have all generated interest from the Big 12. Jeremy Cluff, The Arizona Republic, 26 Aug. 2022 What many of those customers did not know is that the business was on the radar of federal law enforcement. Andrew Wimer, Forbes, 17 Aug. 2022 Brown, for instance, has been on the radar of law enforcement across the country. Danny Mcdonald, BostonGlobe.com, 10 Aug. 2022 For months, Perry has been on the radar of the House select committee investigating the Capitol riot. Kim Bellware, Anchorage Daily News, 10 Aug. 2022 Because by the time my father met Greenberg, while my mom was trying to play the happy homemaker in Easton, Dan McGuiness had found himself on the radar of the DEA. Kristen Mcguiness, Rolling Stone, 7 Aug. 2022 Heart health is on the radar of other wearable device developers. Sophie Bushwick, Scientific American, 29 July 2022 See More

Word History

Etymology

radio detecting and ranging

First Known Use

1941, in the meaning defined at sense 1

Time Traveler
The first known use of radar was in 1941

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