An appliance, device, or piece of machinery which is portable, esp. a compact electrical or electronic appliance which has its own power supply…

= sense B. 3; cf. radio set n. at radio, n. compounds 1a.

Chiefly British. An apparatus for receiving radio signals, a radio (radio, n. 2); (also) an apparatus for both transmitting and receiving radio…

A radio receiving set employing a crystal detector. Now chiefly historical.

Radio equipment; spec. an apparatus for receiving radio signals, a radio receiving set; (also) one for both receiving and transmitting radio…

colloquial. Any of various audio or audio-visual devices, such as a gramophone, radio, or television; (now chiefly) spec. (with the) television…

a simple radio set consisting essentially of an aerial, a tuning device, and a crystal detector, and usually used with headphones.

(also more fully crystal radio set, crystal radio receiver) = crystal set n.

An apparatus for receiving electromagnetic waves, or signals transmitted as electromagnetic waves; (Radio) a combined tuner and amplifier (without…

a radio or radio transceiver set in the dashboard of a motor vehicle and powered by the vehicle's battery.

a combined bedside radio and alarm clock, which can be set so that the radio comes on automatically instead of the alarm.

a television or (esp.) radio having transistors instead of thermionic valves.

a small portable radio having transistors and other solid-state devices in place of thermionic valves; cf. 2.

colloquial name for sound radio, considered outmoded by television; hence, a radio receiver.

= transistor radio n. at compounds.

= transistor radio n. at transistor, n. compounds. Also attributive.

A proprietary term for a combined cassette recorder and radio.