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Meaning of “radar” in the English Dictionary

(Definition of radar from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"radar" in American English

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radarnoun [C/U]

 us   /ˈreɪ·dɑr/
a ​device or ​system for ​finding the ​position or ​speed of ​objects, such as ​aircraft, that cannot be ​seen, by ​measuring the ​direction and ​timing of ​shortradiowaves that are ​sent out and ​reflect back from the ​objects
(Definition of radar from the Cambridge Academic Content Dictionary © Cambridge University Press)

"radar" in Business English

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radarnoun [C]

uk   us   /ˈreɪdɑːr/
below/under the radar (also below/under the radar screen)
if something is below or under the radar, ​people are not aware of it: They were ​operating under the radar, ​selling their Web ​wares from some garage in Bakersfield. Many ​privatetreatmentcentres are ​slipping under the radar ​screen of the ​medicalauthorities.
on/off the radar (also on/off the radar screen)
used to say that ​people do or do not know about something or that something is or is not important to someone: He ​dropped off the ​political radar for nearly two decades. Toy ​safety is definitely on ​consumers' radar.
(Definition of radar from the Cambridge Business English Dictionary © Cambridge University Press)
Translations of “radar”
in Korean 레이더, 전파탐지기…
in Arabic رادار…
in Malaysian radar…
in French radar…
in Russian радар…
in Chinese (Traditional) 雷達…
in Italian radar…
in Turkish radar…
in Polish radar…
in Spanish radar…
in Vietnamese hệ thống ra-đa…
in Portuguese radar…
in Thai เรดาร์…
in German der Radar…
in Catalan radar…
in Japanese レーダー, 電波探知機…
in Chinese (Simplified) 雷达…
in Indonesian radar…
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“radar” in Business English

There, their and they’re – which one should you use?
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