Topic: MILITARY
| Date: | 1300-1400 |
| Language: | Old French |
| Origin: | theatre, from Latin, from Greek theatron, from theasthai 'to watch' |
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thea‧tre S2 W2 British English ; theater American English

1 a building or place with a stage where plays and shows are performed :
an open-air theatre (=a theatre that is outside)
the Mercury Theater
building
[countable]
an open-air theatre (=a theatre that is outside)
the Mercury Theater2
plays
[uncountable]a) plays as a form of entertainment :
I enjoy theater and swimming.
I enjoy theater and swimming.b) the work of acting in, writing, or organizing plays :
classes in theater and music
classes in theater and music3 a building where films are shown [= movie theater AmE; = cinema BrE]
'Bambi' was the first movie I ever saw in the theater.
place to see a film
[countable] American EnglishAMF
'Bambi' was the first movie I ever saw in the theater.4 a special room in a hospital where medical operations are done [= operating room American English]
hospital
[uncountable and countable] British EnglishMH5 a large area where a war is being fought :
the Pacific theater during World War II
war
[countable] formalPM
the Pacific theater during World War II