名詞 amphitheater:

1. a sloping gallery with seats for spectators (as in an operating room or theater)
   同義詞：amphitheatre
2. an oval large stadium with tiers of seats; an arena in which contests and spectacles are held
   同義詞：amphitheatre, coliseum

1. One of the passageways of an amphitheater or a stadium leading from the outside wall or passageway to the seats.
   大通道，出入通道圓形劇場(chǎng)或體育館從外墻或通路到座位的幾個(gè)通道中的一個(gè)

am.phi.the.a.ter

n.（名詞）
An oval or a round structure having tiers of seats rising gradually outward from an open space or arena at the center.
圓形露天劇場(chǎng)：蛋形或圓形建筑，在露天的中央場(chǎng)地周圍有逐漸向外斜上升的階梯式座位
An arena where contests and spectacles are held.
競(jìng)技場(chǎng)所：舉行比賽或表演的圓形角斗場(chǎng)
A level area surrounded by upward sloping ground.
圓形凹地：陡坡地形所圍住的一片平地
An upper, sloping gallery with seats for spectators, as in a theater or an operating room.
階梯式座位區(qū)：有為觀眾設(shè)置的階梯式座位的房間，如劇院和外科手術(shù)室

來源：
Middle English amphitheatre
中古英語 amphitheatre
from Latin amphithe3trum
源自 拉丁語 amphithe3trum
from Greek amphitheatron
源自 希臘語 amphitheatron
amphi- [amphi-]
amphi- [前綴，表.兩邊的.]
theatron [theater] * see theater
theatron [劇院] *參見 theater

【引伸】
am.phitheat.ric
am.phitheat.rically
adv.（副詞）