the projection from the rear of previously photographed material on a translucent screen, used as background for a television or motion-picture shot.
The Surprisingly Religious Background Of “Golly,” “Gosh,” And “Gee”Gosh, golly, and gee casually express surprise or excitement, right? Well, yes, but when they were first introduced to the English language, these short words had a much more serious origin and purpose.
Also called back projection, rear projection.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019