English

Definition of public address system noun from the Oxford Advanced Learner's Dictionary

 

public address system

 noun
noun
BrE
 
; NAmE
 
(abbreviation PA system, PA)
 
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an electronic system that uses microphones and loudspeakers to make music, voices, etc. louder so that they can be heard by everyone in a particular place or building
See the Oxford Advanced American Dictionary entry: public address system