radar
Translation
radar
Examples
The ship was detected by radar.
The ship was detected by radar.
He's trying to fly under the radar.
He's trying to fly under the radar.
Grammar Patterns
((by radar)) detected or tracked using radar The plane was tracked by radar.
((under the radar)) unnoticed or not receiving attention He managed to stay under the radar for months.
Similar Words
Synonyms: detector, scanner
Etymology
It's an acronym for 'RAdio Detection And Ranging'.
Memory Tips
Imagine a bat using sound waves (sonar); radar uses radio waves to detect objects.