the art of writing and producing plays
"After years of studying theater, she finally felt ready to write her first play for production."
a region in which active military operations are in progress
"the army was in the field awaiting action"
"he served in the Vietnam theater for three years"
A place or building, consisting of a stage and seating, in which an audience gathers to watch plays, musical performances, public ceremonies, and so on.
"After waiting for hours outside the theater, we finally found our seats just before the play began."
In plain English: A theater is a building where people watch plays, movies, or other performances on a stage.
"We went to the theater last night to see our favorite play."
Usage: Use the spelling with one 'h' when referring specifically to live performance venues like movie theaters or opera houses. Avoid using this term for general entertainment spaces that lack a dedicated stage and seating area.
The word theater comes from the Latin theātrum, which was borrowed into English via Old French and Middle English. It originally described a place for viewing, derived from the Ancient Greek root meaning "to see" or "to watch."