chroma key


noun Television.

an electronic special-effects system for combining a desired background with live foreground action.

Origin of chroma key

First recorded in 1970–75

British Dictionary definitions for chromakey

chromakey
/ (ˈkrəʊməˌkiː) /

noun

(in colour television) a special effect in which a coloured background can be eliminated and a different background substituted Also called: colour separation overlay