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[kuhl-uh-rey-shuh n] /ˌkʌl əˈreɪ ʃən/
appearance with regard to color arrangement or use of colors; coloring:
the bold coloration of some birds.
1605-15; color + -ation
Related forms
colorational, adjective
colorationally, adverb
decoloration, noun
overcoloration, noun
precoloration, noun
recoloration, noun
transcoloration, noun


[dee-kuhl-er] /diˈkʌl ər/
verb (used with object)
to remove the color from; deprive of color; bleach.
Also, especially British, decolour.
1400-50; late Middle English decolouren < Latin dēcolōrāre, equivalent to dē- de- + colōrāre to color
Related forms
decoloration, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for de coloration


arrangement of colour and tones; colouring
the colouring or markings of insects, birds, etc See also apatetic, aposematic, cryptic
unwanted extraneous variations in the frequency response of a loudspeaker or listening environment
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 de coloration



1620s, from French coloration (16c.), from Late Latin colorationem (nominative coloratio) "act or fact of coloring," noun of action from past participle stem of Latin colorare "to color, to get tanned," from color (see color (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for de coloration


in biology, the general appearance of an organism as determined by the quality and quantity of light that is reflected or emitted from its surfaces. Coloration depends upon several factors: the colour and distribution of the organism's biochromes (pigments), particularly the relative location of differently coloured areas; the shape, posture, position, and movement of the organism; and the quality and quantity of light striking the organism. The perceived coloration depends also on the visual capabilities of the viewer. Coloration is a dynamic and complex characteristic and must be clearly distinguished from the concept of "colour," which refers only to the spectral qualities of emitted or reflected light.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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