radio

n.

1. The study and practice of wireless communication

   radio transmission, radio reception, signaling, radio engineering, radiotelephony, radiotelegraphy, television, radio work, radio operation, radionics; see also broadcasting, communication 1, communications.

2. A receiving device

   receiver, tuner, AM-FM radio, shortwave radio, clock radio, transistor radio, transistor, portable radio, pocket radio, car radio, Walkman (trademark), home radio, radio set, console, wireless, ship's radio, ship-to-shore radio, CB radio, walkie-talkie, two-way radio, crystal set, ghetto blaster*, boom box*, squawk box; see also communications.