This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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

n. An arena where contests and spectacles are held.

n. A level area surrounded by upward sloping ground.

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

n. A semi-circular acoustic backdrop behind performers for an outdoor venue.

n. A completely circular outdoor arena; a classic European amphitheatre.

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

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

n. In anc. Rom. arch., an edifice devoted to the exhibition of gladiatorial contests and the combats of wild beasts.

n. Anything resembling an amphitheater in form, as an oval or circular building with seats rising behind and above each other around a central open space, or a natural area surrounded by rising ground; in horticulture, a sloping arrangement of shrubs and trees.

n. The uppermost gallery of a modern theater.

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

n. a sloping gallery with seats for spectators (as in an operating room or theater)

"If the amphitheater is delayed, he surely wants to keep people from blaming the T.J. Center for unrelated construction delays."

amphitheatre   

gallery   

Crater    Creator    Decatur    Equator    Lemaitre    Mercator    Pater    Slater    amphitheatre    cater   

amphitheatre    stadium    auditorium    sinkhole    outcropping    crater    plaza    arena    rotunda    dais