Breadcrumb Home > Dictionary > Index C chroma key: Meaning and Definition of Find definitions for: chro'ma key" Pronunciation: [key] — Television. Television. an electronic special-effects system for combining a desired background with live foreground action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chromaffin chromat- TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: praedial Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language