Entry 1 sense Webster, 1913 Radiotelephone /(rā`dĭ*ŏ*tĕl"ē̇*fōn)/ · Ra·di·o·tel·e·phone · IPA 01 n. A wireless telephone, in which the signal is conveyed by radio waves. 1. A wireless telephone, in which the signal is conveyed by radio waves.