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chrominance

American  
[kroh-muh-nuhns] / ˈkroʊ mə nəns /

noun

Optics.

  1. the difference in color quality between a color and a reference color that has an equal brightness and a specified chromaticity.

chrominance British  
/ ˈkrəʊmɪnəns /

noun

  1. the quality of light that causes the sensation of colour. It is determined by comparison with a reference source of the same brightness and of known chromaticity

  2. the information that defines the colour (hue and saturation) of a television image, but not the brightness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of chrominance

First recorded in 1950–55; chrom- + (lum)inance

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.