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English definition of “auditorium”

auditorium

noun [C]     /ˌɔːdɪˈtɔːriəm/
the part of a theatre, or similar building, where the audience sit: The ten-thousand seat auditorium was filled to capacity.
a large public building such as a theatre: The lecture will be held in the conference auditorium.
(Definition of auditorium noun from the Cambridge Business English Dictionary © Cambridge University Press)
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