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ENGLISH · A WORD WITH POSSIBILITIES

radio.

The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.

5 characters2 syllables approx.English language

Meaning & usage

noun/ˈɹeɪ.diˌəʊ/Received-Pronunciation/ˈɹeɪ.diˌoʊ/General-American
  1. The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.

    uncountable
    send a message by radio
  2. A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.

    countable
    (of a song, person, etc.) to be on the radio
    (of a song, etc.) to play on/be played on/get played on/come on the radio
  3. A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound. Any audio playing device, such as the on-board entertainment system in a car, usually including a radio receiver as well as the capability to play audio from recorded media; see also car radio.

    broadly · countable
  4. A device that can transmit radio signals.

    countable
  5. The continuous broadcasting of sound via the Internet in the style of traditional radio.

    Internet · uncountable
Where this word comes from

Short for radiotelegraphy.

verb/ˈɹeɪ.diˌəʊ/Received-Pronunciation/ˈɹeɪ.diˌoʊ/General-American
  1. To use two-way radio to transmit (a message) (to another radio or other radio operator).

    ambitransitive
  2. To order or assist (to a location), using telecommunications.

    transitive
Where this word comes from

Short for radiotelegraphy.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.