Someone who devises or suggests a project; a proposer or planner of something. / An optical device that projects a beam of light, especially one used to project an image (or moving images) onto a screen.

plural of projector

An opto-mechanical device for displaying motion pictures by projecting them on a projection screen (Movie projector for projection of moving images from film).

A device that takes a video signal and projects the corresponding image on a projection screen using a lens system.

A device that projects an enlarged image of a photographic slide onto a screen

A projector that projects an image over the heads of the viewers onto a screen in front of them.

plural of overhead projector

plural of video projector

plural of film projector

plural of slide projector