Definitions of annunciator [əˈnʌn siˌeɪ tər]

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Definition of 'annunciator'

Random House Webster's College Dictionary

1. (n.) annunciator
an announcer.

2. annunciator
a signaling apparatus, esp. in some doorbell systems, that uses lights or pointers to indicate the source of the signal.

Etymology: (1745–55)

Definition of 'annunciator'

Princeton's WordNet

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

Definition of 'annunciator'

Webster Dictionary

1. (noun) annunciator
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

2. (noun) annunciator
an indicator (as in a hotel) which designates the room where attendance is wanted

Definition of 'annunciator'

The Standard Electrical Dictionary

1. 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.

Fig. 14. ANNUNCIATOR.

'annunciator' - Nearby Entries
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