the difference in color quality between a color and a reference color that has an equal brightness and a specified chromaticity.
Origin of chrominance
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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