radio
無線電
Ra·di·o- a.
1. Of or pertaining to, or employing, or operated by, radiant energy, specifically that of electromagnetic waves with frequencies between those of infrared radiation and X-rays; hence, pertaining to, or employed in, broadcast radio or television, microwaves, radiotelephones, etc.; as, radio waves.
Ra·di·o- A combining form indicating connection with, or relation to, a radius or ray; specifically Anat., with the radius of the forearm; as, radio-ulnar, radio-muscular, radio-carpal.
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radio
adj : indicating radiation or radioactivity; "radiochemistry"
n 1: medium for communication [syn: radiocommunication, wireless]
2: an electronic receiver that detects and demodulates and
amplifies transmitted signals [syn: radio receiver, receiving
set, radio set, tuner, wireless]
3: a communication system based on broadcasting electromagnetic
waves [syn: wireless]
v : transmit messages via radio waves; "he radioed for help"