Definitions for pa system
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Random House Webster's College Dictionary
PA system(n.)
Ref: public-address system.
Origin of PA system:
1935–40
Princeton's WordNet
public address system, P.A. system, PA system, P.A., PA(noun)
an electronic amplification system used as a communication system in public areas
Wiktionary
PA system(Noun)
public address system
Citation
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"pa system." Definitions.net. STANDS4 LLC, 2013. Web. 25 May 2013. <http://www.definitions.net/definition/pa system>.