n.
Pronunciation: ˌ o ̇ -d ə - ' to ̇ r- ē - ə m
Function: noun
Inflected Form: plural -riums or -ria \ - ē - ə \
Etymology: L, literally, lecture room
Date: 1700
1 : a room, hall, or building used for public gatherings
2 : the part of a public building where an audience sits