Definition of annunciator Annunciator

an•nun•ci•a•tor

We found 9 definitions of annunciator from 5 different sources.

What does annunciator mean?

Plural: annunciators

annunciator - an indicator that announces which electrical circuit has been active (as on a telephone switchboard)

indicator a device for showing the operating condition of some system

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annunciator (Noun)
Anything that announces something.
annunciator (Noun)
An officer in the church of Constantinople, whose business it was to inform the people of the festivals to be celebrated.
annunciator (Noun)
A signalling device that shows which of several electrical circuits is active, especially such a device in a telephone switchboard.
annunciator (Noun)
A buzzer in a UK signal box, that sounds when a train activates a treadle positioned on the track. Provides a warning or announcement of a nearby train.

annunciator (n.)
One who announces. Specifically: An officer in the church of Constantinople, whose business it was to inform the people of the festivals to be celebrated.
annunciator (n.)
An indicator (as in a hotel) which designates the room where attendance is wanted.

annunciator
An apparatus for announcing a call from any place to another, as from a living-room to an office in a hotel, or for announcing the entering of any given room or window in a building protected by a burglar alarm.
A usual system comprises for each annunciator an electro-magnet. Its armature is normally held away from its poles by a spring, and when in that position a latch connected to the armature holds a little shutter. When by a push-button or other device a current is sent through a circuit which includes the electro-magnet the armature is attracted, this releases the latch and the shutter drops. In dropping it displays a number, letter or inscription which indicates the locality of the push-button or other circuit-closing device. Often annunciators are connected in circuit with a bell.