- a controlled technique of lighting, used in photography or the theater, in which a light is placed behind or at right angles to an object, person, or scene to produce such effects as depth or separation of subject and background.
- Movies, Television. a light source placed behind an actor, object, or scene to create a highlight that separates the subject from the background.
verb (used with object), back·light·ed or back·lit, back·light·ing.
- to illuminate (something) from behind.