A theater is a place where plays, movies, or other performances are shown to an audience. It can also mean the art of acting or the world of stage performances in general.
From Old French *theatre*, from Latin *theatrum*, from Greek *theatron* 'place for seeing', from *theasthai* 'to watch'. The word originally focused on the viewing place more than the performance itself.
A theater is literally a 'seeing place'—a building designed so groups of humans can watch stories together. Even a movie theater keeps that ancient Greek idea: a shared room for shared attention.
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