melanism

[mel-uh-niz-uhm]
noun
1.
Ethnology. the condition in human beings of having a high amount of melanin granules in the skin, hair, and eyes.
2.
Zoology. the condition in which an unusually high concentration of melanin occurs in the skin, plumage, or pelage of an animal.

Origin:
1835–45; melan- + -ism

melanistic, adjective
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World English Dictionary
melanism (ˈmɛləˌnɪzəm)
 
n
1.  the condition in man and animals of having dark-coloured or black skin, feathers, etc. Industrial melanism is the occurrence of dark varieties of animals, esp moths, in smoke-blackened industrial regions, in which they are well camouflaged
2.  another name for melanosis
 
mela'nistic
 
adj

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American Heritage
Medical Dictionary

melanism mel·a·nism (měl'ə-nĭz'əm)
n.

  1. See melanosis.

  2. Dark coloration of the skin, hair, fur, or feathers because of a high concentration of melanin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
melanism   (měl'ə-nĭz'əm)  Pronunciation Key 
Dark coloration of the skin, hair, fur, or feathers because of a high concentration of melanin.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for melanistic
A few melanistic bobcats have been sighted and captured in florida.
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