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REFERENCE

radio

n. · v.
US //ˈɹeɪdiˌoʊ// UK //ɹˈeɪdɪˌəʊ// ra·dio
  1. 1 the technology (n.)
    A2 Elementary Science

    the technology used to send sound or signals through the air using waves.

    the technology of signalling and communicating using radio waves; uncountable in this abstract sense.

    Example

    The invention of radio changed how people received news in the early twentieth century.

    Example

    Early pioneers in radio experimented with various frequencies before the medium was regulated for commercial broadcasting.
  2. 2 the device (n.)
    A1 Beginner

    a piece of equipment you use to listen to music, news, or programs.

    an electronic receiver that detects and demodulates radio frequency signals into audible sound.

    Example

    He likes to listen to the radio while he is driving to work.

    Example

    She kept a battery-powered radio in the kitchen to stay informed during the frequent power outages in the winter.
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  1. 3 internet streaming (n.)
    B1 Intermediate Computing

    continuous music or talk programs played over the internet.

    the continuous streaming of audio content via the internet, mimicking the format of traditional broadcast radio.

    Example

    I usually listen to internet radio while I am studying at my computer.

    Example

    The rise of personalized internet radio has significantly disrupted the advertising revenue of traditional FM stations.
  2. 4 to send a message (v.)
    B1 Intermediate

    to send a message to someone using a two-way radio signal.

    to transmit a message or communicate with a specific recipient using a radiotelegraphic or radiotelephonic system.

    Example

    The pilot had to radio the airport to ask for permission to land.

    Example

    The stranded hikers managed to radio for assistance just before their handheld device ran out of power.

    Usage

    The verb is often used with 'for' when requesting help.

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