pig·men·ta·tion

[pig-muhn-tey-shuhn]
noun
1.
coloration, especially of the skin.
2.
Biology. coloration with or deposition of pigment.

Origin:
1865–70; < Late Latin pigmentāt(us) painted, colored (see pigment, -ate1) + -ion

hy·per·pig·men·ta·tion, noun
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
pigmentation (ˌpɪɡmənˈteɪʃən) [Click for IPA pronunciation guide]
 
n
1.  coloration in plants, animals, or man caused by the presence of pigments
2.  the deposition of pigment in animals, plants, or man

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Pigmentation is always a great word to know.
So is primordial soup. Does it mean:
the seas and atmosphere on earth before the existence of life, primarily containing a mixture of water, hydrogen, methane, ammonia, and carbon dioxide
reproduction in which the offspring resemble the parents and undergo the same cycle of development
American Heritage
Medical Dictionary

pigmentation pig·men·ta·tion (pĭg'mən-tā'shən)
n.

  1. Coloration of tissues by pigment.

  2. Deposition of pigment by cells.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The cells can also convert the precursor into a second chemical, called an
  activator, which actually guides pigmentation.
However, acid rain bled the trees of their pigmentation, turning them ashen
  grey.
The final picture shows pigmentation preserved in a fossil feather.
Images with dark and medium areolar pigmentation were rated as more attractive
  than images with light areolae.
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