radio
noun (pl. radios)
the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages: cellular phones are linked by radio rather than wires.
the activity or industry of broadcasting sound programs to the public: she has written much material for radio | [ as modifier ] : a radio station.
radio programs: we used to listen to a lot of radio.
apparatus for receiving radio programs: she turned on the radio.
apparatus capable of both receiving and transmitting radio messages between individuals, ships, planes, etc.: a ship-to-shore radio.
[ in names ] a broadcasting station or channel: Monitor Radio.
verb (radioes, radioing, radioed) [ no obj. ]
communicate or send a message by radio: the pilot radioed for help.
[ with obj. ] communicate with (a person or place) by radio: well radio Athens right away.
radio
denoting radio waves or broadcasting
radio frequency
a frequency or band of frequencies in the range 104 to 1011 or 1012 Hz, suitable for use in telecommunications.