WordWeb Online

1. A building where theatrical performances or motion-picture shows can be presented
   "the theater was full"
   - theatre, house
    
2. The art of writing and producing plays
   - dramaturgy, dramatic art, dramatics, theatre
    
3. A region in which active military operations are in progress
   "he served in the Vietnam theater for three years"; "the army was in the theater of operations awaiting action"
   - field, field of operations, theater of operations [US], theatre, theatre of operations

Derived forms: theaters

See also: theatrical

Type of: building, communicating, communication, edifice, region

Part of: theater of war [US], theatre of war

Encyclopedia: Theater