eumelanin

noun
eu·​mel·​a·​nin | \ (ˈ)yü-ˈme-lə-nən How to pronounce eumelanin (audio) \
plural eumelanins

Definition of eumelanin

: a brown to black pigment that is the most common form of melanin and whose functions include protecting the epidermis against damage from ultraviolet radiation Although we can temporarily raise the amount of eumelanin in our skin by tanning, the baseline amount is controlled by our genes.— Neil Singh If eumelanin was the hadrosaur's only pigment, it would have had grey skin like that of a rhinoceros or an elephant.— Michael Marshall Research shows that black hair contains about 99 percent eumelanin, brown and blond hair 95 percent eumelanin, and red hair 67 percent eumelanin.— Kathy Wollard — compare neuromelanin, pheomelanin

First Known Use of eumelanin

1924, in the meaning defined above

History and Etymology for eumelanin

eu- + melanin

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Time Traveler for eumelanin

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The first known use of eumelanin was in 1924

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Dictionary Entries Near eumelanin

Eumeces

eumelanin

Eumenes

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Cite this Entry

“Eumelanin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eumelanin. Accessed 19 Jan. 2022.

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More Definitions for eumelanin

eumelanin

noun
eu·​mel·​a·​nin | \ (ˈ)yü-ˈme-lə-nən How to pronounce eumelanin (audio) \

Medical Definition of eumelanin

: a brown to black pigment that is the most common form of melanin

Note: Epidermal eumelanin helps to protect against damage from ultraviolet radiation by scattering and absorbing radiation reducing its penetration through the skin.

The more eumelanin (brown pigment) you have, the darker your skin color …Scientific American Research shows that black hair contains about 99 percent eumelanin, brown and blond hair 95 percent eumelanin, and red hair 67 percent eumelanin.— Kathy Wollard, Newsday The marked spectrum of color and diversity of patterns that we are in mammals arises, unexpectedly, from variation in the quantity, quality, and regional distribution of just two types of pigment—black eumelanin and yellow pheomelanin.— Sophie I. Candille et al., Science — compare neuromelanin, pheomelanin

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