melanin
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ə noun
any of a class of insoluble pigments, found in all forms of animal life, that account for the dark color of skin, hair, fur, scales, feathers, etc.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To melanin
Collins
World English Dictionary
melanin (ˈmɛlənɪn) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| any of a group of black or dark brown pigments present in the hair, skin, and eyes of man and animals: produced in excess in certain skin diseases and in melanomas | |
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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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Melanin
is always a great word to know.
So is adipose tissue. Does it mean:
| horny outer layer of the epidermis, consisting of many layers of flat, dead or peeling cells |
| loose connective tissue in which fat cells accumulate |
Etymonline
Word Origin & History
melanin
"black pigment found in animal bodies," 1843, Mod.L., with chemical suffix -in, from Gk. melas (gen. melanos) "black," from PIE base *mel- "dark, soiled, dirty" (cf. Skt. malinah "dirty, stained, black," Lith. melynas "blue," L. mulleus "reddish").
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
melanin mel·a·nin (měl'ə-nĭn)
n.
Any of a group of naturally occurring dark pigments composed of granules of highly irregular polymers that usually contain nitrogen or sulfur atoms, especially the pigment found in skin, hair, fur, and feathers.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
| melanin (měl'ə-nĭn) Pronunciation Key
Any of various pigments that are responsible for the dark color of the skin, hair, scales, feathers, and eyes of animals and are also found in plants, fungi, and bacteria. Melanins are polymers, often bound to proteins, and in the animal kingdom are built from compounds produced by the oxidation of the amino acid tyrosine. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
melanin [(mel-uh-nin)]A dark brown coloring found in the body, especially in the skin and hair. Produced by special skin cells that are sensitive to sunlight, melanin protects the body by absorbing ultraviolet radiation from the sun.
Note: The amount of melanin present in the skin determines the color of a person's complexion: people with a large amount have dark skin, whereas those with very little have fair skin. Melanin is also responsible for tanning.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
The compound reduces melanin but in high doses can leave permanent dark spots.
Two types of melanin pigments, one light and one dark, control hair's basic shades.
Paleness is related to blood flow in the skin rather than deposit of melanin in the skin.
Attractiveness seemed to increase as levels of melanin decreased.
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