public address system




  • (written as public-address system)
    A system, such as that utilized in airports or shopping centers, which serves convey voice messages through a distributed group of speakers powered by one or more amplifiers. Its abbreviation is PA system.

Information & Library Science

  • noun a loudspeaker and microphone which enables a speaker to be heard by a large group of people


  • noun a system of loudspeakers, by which messages can be given to the public in e.g. a supermarket, exhibition centre or airport.