A movie theater (American English) or cinema (Commonwealth English), also known as a movie house, cinema hall, picture house, picture theater, the movies, the pictures, the big screen (colloquialism), or simply theater, is a business that contains auditoriums for viewing films for public entertainment. Most are commercial operations catering to the general public, who attend by purchasing tickets.
The film is projected with a movie projector onto a large projection screen at the front of the auditorium while the dialogue, sounds and music are played through a number of wall-mounted speakers. Since the 1970s, subwoofers have been used for low-pitched sounds. Since the 2010s, the majority of movie theaters have been equipped for digital cinema projection, removing the need to create and transport a physical film print on a heavy reel.