|—n , pl -os|
|1.||the use of electromagnetic waves, lying in the radio-frequency range, for broadcasting, two-way communications, etc|
|2.||an electronic device designed to receive, demodulate, and amplify radio signals from sound broadcasting stations, etc|
|3.||a similar device permitting both transmission and reception of radio signals for two-way communications|
|4.||the broadcasting, content, etc, of sound radio programmes: he thinks radio is poor these days|
|5.||a. the occupation or profession concerned with any aspect of the broadcasting of sound radio programmes: he's in radio|
|b. (modifier) relating to, produced for, or transmitted by sound radio: radio drama|
|6.||radiotelegraph radiotelegraphy short for radiotelephone|
|a. of, relating to, employed in, or sent by radio signals: a radio station|
|b. of, concerned with, using, or operated by radio frequencies: radio spectrum|
|8.||(modifier) (of a motor vehicle) equipped with a radio for communication: radio car|
|—vb , -os, -os, -oing, -oed|
|9.||to transmit (a message) to (a person, radio station, etc) by means of radio waves|
|[C20: short for radiotelegraphy]|
|1.||denoting radio, broadcasting, or radio frequency: radiogram|
|2.||indicating radioactivity or radiation: radiochemistry; radiolucent|
|3.||indicating a radioactive isotope or substance: radioactinium; radiothorium; radioelement|
|[from French, from Latin radius ray; see |
radio- or radi-
Radiation; radiant energy: radiometer.
|radio (rā'dē-ō) Pronunciation Key
Noun The equipment used to generate, alter, transmit, and receive radio waves so that they carry information.
Adjective Relating to or involving the emission of radio waves.