Definitions of radio:
  • noun:   a communication system based on broadcasting electromagnetic waves
  • noun:   medium for communication
  • noun:   an electronic receiver that detects and demodulates and amplifies transmitted signals
  • verb:   transmit messages via radio waves
    Example: "He radioed for help"
  • adjective:   indicating radiation or radioactivity
    Example: "Radiochemistry"

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Search for radio at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia

See radio used in context: 10 rhymes, several books and articles.

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