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English definition of “radar”

radar

noun [U] uk   /ˈreɪ.dɑːr/ us    /-dɑːr/
a system that uses radio waves to find the position of objects that cannot be seen: Other vessels in the area show up on the ship's radar (screen).Radio
(Definition of radar from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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