coloration

[kuhl-uh-rey-shuhn]
noun
appearance with regard to color arrangement or use of colors; coloring: the bold coloration of some birds.

Origin:
1605–15; color + -ation

colorational, adjective
colorationally, adverb
decoloration, noun
overcoloration, noun
precoloration, noun
recoloration, noun
transcoloration, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
coloration or colouration (ˌkʌləˈreɪʃən)
 
n
1.  arrangement of colour and tones; colouring
2.  apatetic aposematic See also cryptic the colouring or markings of insects, birds, etc
3.  unwanted extraneous variations in the frequency response of a loudspeaker or listening environment
 
colouration or colouration
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

coloration
early 17c., from Fr. coloration (16c.), from L. *colorationem, noun of action from colorare "to color," from color (see color).
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica
Encyclopedia

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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Example sentences
Some frogs secret hallucinogenic chemicals on their skin--particularly the
  brightly colored frogs with warning coloration.
But crosstalk cancellation has always introduced audible spectral coloration.
It has been said that the brilliant hues of the coral-snake when in its native
  haunts really confer on it a concealing coloration.
They show up as an intense purple coloration in the hear of the potato.
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