Annunciator

noun

Definitions

Noun
  1. 1
    Anything that announces something.
  2. 2
    an indicator that announces which electrical circuit has been active (as on a telephone switchboard) wordnet
  3. 3
    Anything that announces something.; An officer in the church of Constantinople, whose business it was to inform the people of the festivals to be celebrated.
  4. 4
    A signalling device that shows which of several electrical circuits is active, especially such a device in a telephone switchboard.
  5. 5
    A buzzer in a signal box that sounds when a train activates a treadle positioned on the track, and thus provides a warning or announcement of a nearby train. UK

Etymology

From Latin [Term?].

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