auditorium
🇺🇸
/ˌɔːdɪˈtɔːriəm/
🇬🇧
/ˌɔːdɪˈtɔːriəm/
the area in a theater or hall where people sit to watch a show
The auditorium was full of people waiting for the concert to start.
a large room or building used for public events like meetings or concerts
The school auditorium is used for assemblies and performances.