Pronunciation: (am'fu-thē"u-tur, -thēu"tur),[key] —n. 1. an oval or round building with tiers of seats around a central open area, as those used in ancient Rome for gladiatorial contests.
2. any similar place for public contests, games, performances, exhibitions, etc.; an arena, stadium, or auditorium.
3. a room having tiers of seats arranged around a central area, in which students and other observers can view surgery, hear lectures, etc.
4. Brit. a. the first section of seats in the gallery of a theater.
b. a designated section of seats in any part of a theater.
5. a level area of oval or circular shape surrounded by rising ground. Also,am'phi•the"a•tre.