- a system that uses radio waves to find the position and movement of objects, for example planes and ships, when they cannot be seen
- They located the ship by radar.
- a radar screen
Extra ExamplesTopics Transport by waterc1, Transport by airc1- The aircraft suddenly went off the radar.
- The submarine is impossible to detect on radar.
- navigation by radar
Oxford Collocations Dictionaryadjective- enemy
- police
- airborne
- …
- be equipped with
- operator
- station
- system
- …
- by radar
- on radar
- off the radar
- on the radar
Word Origin1940s: from ra(dio) d(etection) a(nd) r(anging).Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
Idioms
See radar in the Oxford Advanced American DictionarySee radar in the Oxford Learner's Dictionary of Academic Englishbelow/under the radar
- used to say that people are not aware of something
- Experts say a lot of corporate crime stays under the radar.
- The conflict has slipped below the radar of the media.
on/off the radar (screen)
- used to say that people’s attention is on or not on something
- The issue of terrorism is back on the radar screen.
- Since the scandal broke, all other issues seem to have disappeared off the radar screen as far as the media is concerned.
Check pronunciation:
radar