radio
nounElectromagnetic radiation with lower frequencies and longer wavelengths than those of microwaves, having frequencies lower than 300 megahertz and wavelengths longer than 1 meter.
nounThe transmission and reception of electromagnetic waves within this range, especially when convertible to audible sounds.
nounA device, such as a walkie-talkie, that transmits or receives such signals.
nounThe system or industry that broadcasts programs of audio content to the public or subscribers by means of radio waves.
nounAudio content, especially short programs or sets of songs, created for or distributed through such a system.
nounAn electronic device for listening to radio programming, consisting of a tuner and speakers.
intransitive verbTo transmit by radio.
intransitive verbTo transmit a message to by radio.