The Simple English Wikipedia has an article on: Auditorium Pronunciation (UK) IPA (key): /ɔː.dɪˈtɔː.rɪ.əm/ (US) IPA (key): /ˌɔ.dəˈtɔ.ri.əm/ Audio (UK)(file) Hyphenation: au‧di‧tor‧i‧um Noun Singular auditorium Plural auditoriums or auditoria (countable) An auditorium is a room built for an audience to watch a performance.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads