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PA system

PA system

7 2.8
A set of loud electronic speakers that plays announcements in public places
  • noun
  • /piː eɪ ˈsɪstəm/
translation icon : sistema de megafonía
  • During the concert, the band used a PA system to amplify their music for the audience.

I mean, just imagine a, imagine what, how little need be said over the PA system of an airplane that's flying to provoke an absolute emergency.

Examples

  • I'll double-check the PA system.

  • Turn on the PA system.

  • I need to use your PA system.

  • I just put this new PA system in.

  • The principal informed us of the disaster over the PA system.

    Blog text (30)
  • The police used the PA systems of the vehicles to give directions since the power was out at the stadium.

    Blog text (2)
  • College names were presented on the scoreboards and over the PA system.

    Academic text (2005)
  • Norman was about to ask whether there was anything else when the PA system crackled.

    Fiction book (2002)
  • At the beginning of second period, the principal came on the PA system and said that crisis counselors were available for those who wished to speak to them.

    Fiction book (1996)
  • Suddenly, Mr. Himbry's voice was amplified through intercoms across campus via the PA system.

    Fiction book (1996)

Synonyms

sound system
vsPA system
30 3.5

A set of electronic devices that records, makes louder, or plays sound

is narrower, focusing on public announcement and sound transmission
PA
vsPA system
22 5.1

A set of microphones and speakers used to make announcements or play music in public

is focused on making announcements or transmitting sound in public areas
public address system
vsPA system
4 3.3

A system with microphones and speakers that makes announcements loud in public places

is the general electronic setup for public announcements without listing parts
speaker system
vsPA system
4 2.7

A set of machines that make music or speech louder for a room

is intended specifically to make announcements or transmit sound publicly
P.A. system
vsPA system
  • Specialized
3 3.4

A set of speakers and microphones that make sound louder so many people can hear it

is about making announcements or sending sound across public areas
audio system
vsPA system
3 3.4

Electronic devices used to play, record, or make sound louder

is concentrated on use for public announcements rather than general audio
loudspeaker system
vsPA system
1 3.6

A set of speakers and parts that makes sound louder so people hear it far away

is aimed at transmitting announcements and sound in public areas
P.A.
vsPA system
  • Specialized
3.9

A sound system that makes speech or music louder so many people can hear

is used mainly to make announcements or project sound in public places

How Loud

PA system
7 2.8
megaphone
23 3.6

Surface Forms

PA system singular
PA systems plural

Morphology

PA + system

The meaning of 'PA system' is directly compositional: 'PA' (an amplification/setup for announcements) combined with 'system' (a collection of components) yields an amplification system for public announcements. This follows a straightforward noun+noun compounding pattern, so a B1 learner who knows both constituents would readily infer the MWE meaning.

Etymology

PA system comes from the words PA and system, where PA stands for 'public address'. Imagine someone speaking into a microphone and speakers sending the sound across a room, and that's why PA system means 'a sound system used to make announcements'.