[ra.dio] adj [
[2]radio or radio-] (1887) 1: of, relating to, or operated by radiant energy
2: of or relating to electric currents or phenomena (as electromagnetic radiation) of frequencies between about 15,000 and 1E11 hertz 3 a: of, relating to, or used in radio or a radio set b: specializing in radio or associated with the radio industry c (1): transmitted by radio (2): making or participating in radio broadcasts d: controlled or directed by radio
[2]radio n, pl ra.di.os [short for radiotelegraphy] (1903) 1 a: the wireless transmission and reception of electric impulses or signals by means of electromagnetic waves b: the use of these waves for the wireless transmission of electric impulses into which sound is converted
2: a radio message
3: a radio receiving set
4. a: a radio transmitting station b: a radio broadcasting organization c: the radio broadcasting industry d: communication by radio [3]radio vt (1913) 1: to send or communicate by radio
2: to send a radio message to ~ vi: to send or communicate something by radio