(plural green screens)
- Chroma key, a technique for replacing the studio background of video. Also called blue screen depending on the color of the background.
- The display of an IBM 3270 or similar monochrome monitor.
green screen - Computer Definition
(1) See color key.
(2) A computer terminal that displays green characters on a dark background. Widely used in the early days of mainframes and minicomputers, as well as in the days of DOS, the character-based green screen gave way to the graphics-based interfaces of Windows and Mac.