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chroma key

American  
[kroh-muh kee] / ˈkroʊ mə ˌki /

noun

Movies, Television.

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

Etymology

Origin of chroma key

First recorded in 1955–60

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.