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chroma

[kroh-muh] /ˈkroʊ mə/
noun
1.
the purity of a color, or its freedom from white or gray.
2.
intensity of distinctive hue; saturation of a color.
Origin
1885-1890
1885-90; < Greek chrôma color
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for chroma
  • Exterior shots are chroma keyed model shots, while interior ones are produced on a set.
British Dictionary definitions for chroma

chroma

/ˈkrəʊmə/
noun
1.
the attribute of a colour that enables an observer to judge how much chromatic colour it contains irrespective of achromatic colour present See also saturation (sense 4)
2.
(in colour television) the colour component in a composite coded signal
Word Origin
C19: from Greek khrōma colour
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for chroma
n.

"quality or intensity of color," 1889, from Latinized form of Greek khroma "surface of the body, skin, color of the skin," also used generically for "color" and, in plural, "ornaments, embellishments," related to khros "surface of the body, skin," khrozein "to touch the surface of the body, to tinge, to color;" the root is explained as being somehow from PIE *ghreu- "to rub, grind" (see grit (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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