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English definition of “radio”


noun [C/U]    /ˈreɪ·diˌoʊ/ (plural radios)
a device for receiving , and sometimes broadcasting , sound messages , or the receiving or sending of sound messages : [C] I listen to the radio in the morning to get the weather report . Radio is also the work of broadcasting sound programs for the public to listen to. physics Radio waves are the energy waves of a certain length that are used in radio broadcasts .
(Definition of radio noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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