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

Examples of radar in a Sentence

The approaching planes were detected by radar.
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.
India is increasingly on the radar of global luxury giants, as the country’s disposable income increased by 24% between 2019 and 2022, according to Anul Sareen at global research company Euromonitor. Matteo Atti, Forbes, 21 Jan. 2025 Sensor fusion technologies take a combination of data from radar, lidar and camera sensors to create a detailed image of the driving environment. Pia Singh, CNBC, 18 Jan. 2025 Here's what experts say DC Massachusetts Chicago, Illinois Indianapolis Atlanta, Georgia National weather map National weather radar Anthony Robledo is a trending news reporter for USA TODAY. Anthony Robledo, USA TODAY, 18 Jan. 2025 Another area that should be on any design lover’s radar is Miami Beach’s Art Deco Historic District, which landed on the National Register of Historic Places in 1979 because of its 800 historic buildings. Amelia Mularz, Architectural Digest, 17 Jan. 2025 See all Example Sentences for radar 

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

Dictionary Entries Near radar

Cite this Entry

“Radar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radar. Accessed 30 Jan. 2025.

Kids Definition

radar

noun
ra·​dar ˈrā-ˌdär How to pronounce radar (audio)
: a device that sends out radio waves for detecting and locating an object by the reflection of the radio waves and that may use this reflection to find out the position and speed of the object
Etymology

from radio detecting and ranging

More from Merriam-Webster on radar

Last Updated: - Updated example sentences
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