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.

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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

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Etymology

Origin of chrominance

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