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
That move turned the vessel into an unexpected spectacle in Pearl Harbor, where even long-time residents familiar with the platform’s unusual silhouette were surprised to see its powerful X-band radar fully exposed.
—
Bojan Stojkovski, Interesting Engineering, 29 Nov. 2025
Other customer favorites that should be on your radar?
—Isabel Garcia, PEOPLE, 28 Nov. 2025
Recently, Ukraine launched smaller bomber drones from a USV, essentially a small drone aircraft carrier, that blasted Russian radars in Crimea, according to the Ukrainian military.
—Brad Lendon, CNN Money, 27 Nov. 2025
Dak Prescott has been playing like an under-the-radar MVP candidate this season, and after a win over the Eagles last weekend, the Cowboys could start to put everything together over the remaining part of the season.
—Ben Verbrugge, MSNBC Newsweek, 27 Nov. 2025
See All Example Sentences for radar
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.
Bojan Stojkovski, Interesting Engineering, 29 Nov. 2025
Other customer favorites that should be on your radar?
—Isabel Garcia, PEOPLE, 28 Nov. 2025
Recently, Ukraine launched smaller bomber drones from a USV, essentially a small drone aircraft carrier, that blasted Russian radars in Crimea, according to the Ukrainian military.
—Brad Lendon, CNN Money, 27 Nov. 2025
Dak Prescott has been playing like an under-the-radar MVP candidate this season, and after a win over the Eagles last weekend, the Cowboys could start to put everything together over the remaining part of the season.
—Ben Verbrugge, MSNBC Newsweek, 27 Nov. 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 7 Dec. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share