radio adj : indicating radiation or radioactivity; "radiochemistry" (noun)
1: medium for communication [syn: radiocommunication, wireless]
2: an electronic receiver that detects and demodulates and amplifies transmitted signals [syn: radio receiver, [[receiving set]], radio set, tuner, wireless]
3: a communication system based on broadcasting electromagnetic waves [syn: wireless] v : transmit messages via radio waves; "he radioed for help"