radio definition, meaning - what is radio in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “radio”

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radio

noun uk   /ˈreɪ.di.əʊ/  us   /-oʊ/ (plural radios)
A1 [C] a piece of electronic equipment used for listening to radio broadcasts: a car radio I switched on the radio.A1 [S or U] the programmes that you hear when you listen to the radio: I heard a good programme on the radio last night. I don't listen to radio much.B1 [U] the system or work of broadcasting sound programmes for the public to listen to: a local radio station She's got some kind of job in radio. [C or U] a piece of electronic equipment that can send and receive spoken messages or signals, or the messages or signals that are sent or received: We sent a message over the radio/by radio. The children had radio-controlled toy cars for Christmas.
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radio

verb [I or T] uk   /ˈreɪ.di.əʊ/  us   /-oʊ/
to send a message to someone by radio: We'll have to radio for more supplies. They radioed their base for help.
(Definition of radio from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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