radio meaning and definition

RADIO noun

Definition of radio (noun)

1. medium for communication
   • synonyms: radiocommunication, wireless
2. an electronic receiver that detects and demodulates and amplifies transmitted signals
   • synonyms: radio receiver, radio set, receiving set, tuner, wireless
3. a communication system based on broadcasting electromagnetic waves
   • synonyms: wireless

RADIO verb

Definition of radio (verb)

1. transmit messages via radio waves
   • "he radioed for help"

RADIO adjective

Definition of radio (adjective)

1. indicating radiation or radioactivity
   • "radiochemistry"