auditorium

[ aw-di-tawr-ee-uh m, -tohr- ]
/ ˌɔ dɪˈtɔr i əm, -ˈtoʊr- /

noun, plural au·di·to·ri·ums, au·di·to·ri·a [aw-di-tawr-ee-uh, -tohr-] /ˌɔ dɪˈtɔr i ə, -ˈtoʊr-/.

the space set apart for the audience in a theater, school, or other public building.
a building for public gatherings; hall.

Origin of auditorium

1720–30; < Latin: lecture hall; see auditor, -tory2

British Dictionary definitions for auditoria

auditorium
/ (ˌɔːdɪˈtɔːrɪəm) /

noun plural -toriums or -toria (-ˈtɔːrɪə)

the area of a concert hall, theatre, school, etc, in which the audience sits
US and Canadian a building for public gatherings or meetings

Word Origin for auditorium

C17: from Latin: a judicial examination, from audītōrius concerning a hearing; see auditory