1. a large room or building where an audience gathers to watch or listen to performances, lectures, or other events

Examples

• The school auditorium was packed for the graduation ceremony.
• She nervously walked onto the auditorium stage to give her speech.
• The concert will be held in the university’s main auditorium.
• Students filed into the auditorium for the morning assembly.
• The auditorium seats over 500 people comfortably.
• They renovated the old auditorium with new lighting and sound equipment.