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
His experience playing in the slot and on the outside, coupled with his speed, put him firmly on the Colts’ radar.
—
James Boyd, New York Times, 28 Apr. 2025
However, be aware that there could be some lava boiling beneath the radar, especially in regard to your health, routines, coworkers or employment matters.
—Kyle Thomas, People.com, 27 Apr. 2025
Around 18 months earlier, Walker said, Christy had unexpectedly vanished from the FBI’s radar.
—Oscar Holland, CNN Money, 27 Apr. 2025
Elad has attributed his nomadic collegiate path as reflecting a lack of preparedness for college life, injuries, coaching schemes, and rebuilding his football career at a junior college in hopes of returning to D-I and getting on the radar of NFL teams.
—Michael McCann, Sportico.com, 27 Apr. 2025
See All Example Sentences for radar
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James Boyd, New York Times, 28 Apr. 2025
However, be aware that there could be some lava boiling beneath the radar, especially in regard to your health, routines, coworkers or employment matters.
—Kyle Thomas, People.com, 27 Apr. 2025
Around 18 months earlier, Walker said, Christy had unexpectedly vanished from the FBI’s radar.
—Oscar Holland, CNN Money, 27 Apr. 2025
Elad has attributed his nomadic collegiate path as reflecting a lack of preparedness for college life, injuries, coaching schemes, and rebuilding his football career at a junior college in hopes of returning to D-I and getting on the radar of NFL teams.
—Michael McCann, Sportico.com, 27 Apr. 2025
See All Example Sentences for radar
Cite this Entry
“Radar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radar. Accessed 1 May. 2025.
Copy CitationKids Definition
radar
noun
ra·dar
ˈrā-ˌdär 
: 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
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