melanin(redirected from melanin deficiency)
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Any of a group of naturally occurring dark pigments, especially the pigment found in skin, hair, fur, and feathers.
(Biology) 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
mel•a•nin(ˈmɛl ə nɪn)
any of a class of insoluble pigments that are found in all forms of animal life and account for the dark color of skin, hair, fur, scales, and feathers.
[1835–45; < Greek melan-, s. of mélās black + -in1]
A dark pigment found in the skin, hair, scales, feathers, and eyes of animals. It provides protection against the sun's rays by absorbing ultraviolet light.
A dark pigment occurring in skin and hair.
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|Noun||1.||melanin - insoluble pigments that account for the color of e.g. skin and scales and feathers|
feather, plumage, plume - the light horny waterproof structure forming the external covering of birds
cutis, skin, tegument - a natural protective body covering and site of the sense of touch; "your skin is the largest organ of your body"
animal pigment - pigment occurring in animals