au·di·to·ri·um 
/ˌɑ:dəˈtorijəm/ noun
plural au·di·to·ri·ums also au·di·to·ria /ˌɑ:dəˈtorijəm/ noun /-ˈtorijə/ [count] 1 US : a large room or building where people gather to watch a performance, hear a speech, etc. 2 : the part of a building (such as a theater) where an audience sits
