Noun:
1: radio, radiocommunication, wireless medium for communication
2: tuner, radio, wireless, receiving set, radio set, radio receiver 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, radio, energy indicating radiation or radioactivity; "radiochemistry"