from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The wireless transmission through space of electromagnetic waves in the approximate frequency range from 10 kilohertz to 300,000 megahertz.
- n. Communication of audible signals encoded in electromagnetic waves.
- n. Transmission of programs for the public by radio broadcast.
- n. An apparatus used to transmit radio signals; a transmitter.
- n. An apparatus used to receive radio signals; a receiver.
- n. A complex of equipment capable of transmitting and receiving radio signals.
- n. A station for radio transmitting.
- n. A radio broadcasting organization or network of affiliated organizations.
- n. The radio broadcasting industry.
- n. A message sent by radio.
- transitive v. To transmit by radio: radio a message to headquarters.
- transitive v. To transmit a message to by radio: radioed the spacecraft.
- intransitive v. To transmit messages or a message by radio: a ship radioing for help.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
- n. A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.
- n. A device that can transmit radio signals.
- n. The continuous broadcasting of sound recordings via the Internet in the style of traditional radio.
- v. To use two-way radio to transmit (a message) (to another radio or other radio operator).
- v. To order or assist (to a location), using telecommunications.
Short for radiotelegraphy.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin radius ("ray"). (Wiktionary)