[ rey-dee-oh-tel-uh-fohn ]
/ ˌreɪ di oʊˈtɛl əˌfoʊn /


a telephone in which sound or speech is transmitted by means of radio waves instead of through wires or cables.

verb (used with or without object), ra·di·o·tel·e·phoned, ra·di·o·tel·e·phon·ing.

to telephone by radiotelephony.

Nearby words

  1. radiotechnology,
  2. radiotelegram,
  3. radiotelegraph,
  4. radiotelegraphy,
  5. radiotelemetry,
  6. radiotelephony,
  7. radioteletype,
  8. radiotherapeutic,
  9. radiotherapeutics,
  10. radiotherapist

Origin of radiotelephone

First recorded in 1905–10; radio- + telephone

Related formsra·di·o·tel·e·phon·ic [rey-dee-oh-tel-uh-fon-ik] /ˌreɪ di oʊˌtɛl əˈfɒn ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for radio-telephone

British Dictionary definitions for radio-telephone


/ (ˌreɪdɪəʊˈtɛlɪˌfəʊn) /


Also called: radiophone, wireless telephone a device for communication by means of radio waves rather than by transmitting along wires or cables


to telephone (a person) by radiotelephone
Sometimes shortened to: radio

Derived Formsradiotelephonic (ˌreɪdɪəʊˌtɛlɪˈfɒnɪk), adjectiveradiotelephony (ˌreɪdɪəʊtɪˈlɛfənɪ), noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for radio-telephone



1900, from radio (n.) + telephone (n.).

Online Etymology Dictionary, © 2010 Douglas Harper