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English definition of “theater”

theater

noun (also theatre)  /ˈθi·ə·t̬ər/ us  

theater noun (BUILDING)

[C] a building, room, or outside structure with rows of seats, each row usually higher than the one in front, from which people can watch a performance, a movie, or another activity: Lincoln Plaza Cinema has five movie theaters.

theater noun (PERFORMING ARTS)

[U] the art or activity of writing and performing plays, or the public performance of plays: We have tickets to the theater tonight (= to watch a performance).
(Definition of theater from the Cambridge Academic Content Dictionary © Cambridge University Press)
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