Definition of radar
- fell off the radar after losing their first three games
The approaching planes were detected by radar.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a device that sends out radio waves for finding out the position and speed of a moving object (such as an airplane)
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