Definition: a communication system based on broadcasting electromagnetic waves
Main entry: radio, radio receiver, radio set, receiving set, tuner, wireless
Definition: an electronic receiver that detects and demodulates and amplifies transmitted signals
Main entry: radio, radiocommunication, wireless
Definition: medium for communication
Main entry: radio
Definition: transmit messages via radio waves
Usage: he radioed for help
Main entry: radio
Definition: indicating radiation or radioactivity
Usage: radiochemistry