public-address system

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pub·lic-ad·dress system

(pŭb′lĭk-ə-drĕs′)
n. Abbr. PA
An electronic amplification apparatus installed and used for broadcasting in public areas.
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.

public-address system

n
(Electronics) a system of one or more microphones, amplifiers, and loudspeakers for increasing the sound level of speech or music, used in auditoriums, public gatherings, etc. Sometimes shortened to: PA system
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pub′lic-address′ sys`tem


n.
a combination of electronic devices that makes sound audible via loudspeakers to many people, as in an auditorium or out of doors.
[1920–25]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Translations

public-address system

[ˌpʌblɪkəˈdrɛsˌsɪstəm] n → impianto di amplificazione
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
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References in periodicals archive
Primarily designed as a conference centre, the hall relies on a sound-amplification system to give an impression of a concert-hall acoustic; there are even miniature loudspeakers in the back of every seat.
Culture: Thrilling ride to the heart of Europe; As the CBSO cross new borders, Christopher Morley is there to report
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