[ kroh-muh-nuh ns ]
/ ˈkroʊ mə nəns /

noun Optics.

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

Origin of chrominance

First recorded in 1950–55; chrom- + (lum)inance Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for chrominance

/ (ˈkrəʊmɪnəns) /


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

Word Origin for chrominance

C20: from chromo- + luminance
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