Radio

Etymology
Circa 1920, from, short for.

Noun

 * 1)  radio technology that allows broadcasters to transmit audio programs; such programs
 * 2)  radio device for receiving such programs
 * 1)  radio device for receiving such programs

Usage notes

 * For radio with several transmitters, as employed e.g. by police, use (technology) and  (device).

Noun

 * 1) radio

Noun

 * 1) radio

Noun

 * 1) radio