Amphitheater vs. Amphitheatre — What's the Difference?

An oval or circular structure having tiers of seats rising gradually outward from a central open space or arena.

An amphitheatre (British English) or amphitheater (American English; both ) is an open-air venue used for entertainment, performances, and sports. The term derives from the ancient Greek ἀμφιθέατρον (amphitheatron), from ἀμφί (amphi), meaning "on both sides" or "around" and θέατρον (théātron), meaning "place for viewing".Ancient Roman amphitheatres were oval or circular in plan, with seating tiers that surrounded the central performance area, like a modern open-air stadium.

(Geology) A level area surrounded by upward sloping ground.

An open, outdoor theatre (which may be a theatre in the round, or have a stage with seating on only one side), especially one from the classical period of ancient Greece or Rome, or a modern venue of similar design.

An upper, sloping gallery with seats for spectators, as in a theater or operating room.

(geology) A natural formation of a similar shape, where a steep mountain or slope a particular rock formation forms a partial or compete bowl, especially one used as a performance space (and possibly modified by carving out seats, etc) because the slopes naturally amplify or echo sound.

An oval or circular building with rising tiers of seats about an open space called the arena.

A sloping gallery with seats for spectators (as in an operating room or theater)

Anything resembling an amphitheater in form; as, a level surrounded by rising slopes or hills, or a rising gallery in a theater.

An oval large stadium with tiers of seats; an arena in which contests and spectacles are held

A sloping gallery with seats for spectators (as in an operating room or theater)

An oval large stadium with tiers of seats; an arena in which contests and spectacles are held