monitor - definition and synonyms

noun [countable] 

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  1. 1
    a computer screen, or the part of a computer that contains the screen

    a 17-inch colour monitor

    1. a.
      a screen that shows pictures or information

      The monitor showed that someone was moving around in the car park.

      The instructions are displayed on a monitor.

  2. 2
    a piece of equipment used for showing and recording what is happening in a particular part of someone’s body