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A public-address system.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Electronics) See public-address system
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a combination of electronic devices that makes sound audible via loudspeakers to many people, as in an auditorium or out of doors.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||PA system - an electronic amplification system used as a communication system in public areas|
amplifier - electronic equipment that increases strength of signals passing through it
communication system - a system for communicating
loudspeaker, loudspeaker system, speaker system, speaker unit, speaker - electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
tannoy - a loudspeaker
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