Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Origin: intercommunication (system)

intercom

 noun
     
Related topics: Communications
in‧ter‧com [countable]
TCTTA a communication system by which people in different parts of a building, aircraft etc can speak to each other:
The pilot's voice came over the intercom.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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