RADIO

I. adjective Etymology: 2~ or ~- Date: 1887 of, relating to, or operated by radiant energy, of or relating to electric currents or phenomena (as electromagnetic radiation) of frequencies between about 3000 hertz and 300 gigahertz, 3. of, relating to, or used in ~ or a ~ set, specializing in ~ or associated with the ~ industry, c. transmitted by ~, making or participating in ~ broadcasts, controlled or directed by ~, II. noun (plural ~s) Etymology: short for ~telegraphy Date: 1903 1. the wireless transmission and reception of electric impulses or signals by means of electromagnetic waves, the use of these waves for the wireless transmission of electric impulses into which sound is converted, a ~ message, a ~ receiving set, 4. a ~ transmitting station, a ~ broadcasting organization, the ~ broadcasting industry, communication by ~, III. verb Date: 1913 transitive verb to send or communicate by ~, to send a ~ message to, intransitive verb to send or communicate something by ~