a building designed for the presentation of dramatic performances
chiefly NAmer a cinema
dramatic literature or performances
dramatic effectiveness or quality
The effect is pure theatre
(the theatre) the world of actors, acting, and drama generally
the place where significant events or actions take place
the theatre of war
a room with rising tiers of seats
a lecture theatre
Brit = operating theatre
(used before a noun) in warfare, confined or appropriate to a limited sphere of operations
[Middle English theatre via French and Latin from Greek theatron, from theasthai to see, view, from thea act of seeing]