Noun:
1: radiocommunication, wireless, radio medium for communication
2: radio receiver, radio, tuner, wireless, receiving set, radio set an electronic receiver that detects and demodulates and amplifies transmitted signals
3: wireless, radio a communication system based on broadcasting electromagnetic waves
Verb:
1: radio transmit messages via radio waves; "he radioed for help"
Adjective:
1: radiant energy, energy, radio indicating radiation or radioactivity; "radiochemistry"