Definition of melanism
1 : an increased amount of black or nearly black pigmentation (as of skin, feathers, or hair) of an individual or kind of organism — compare industrial melanism
2 : intense human pigmentation of the skin, eyes, and hair
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Recent Examples of melanism from the Web
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But why melanism evolved in cats is a trickier question.
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The animal is melanistic—its genes carry a mutation that creates more dark pigment than light pigment, according to Eduardo Eizirik, a biologist and cat-melanism expert at Pontifical Catholic University of Rio Grande do Sul in Brazil.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'melanism.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of melanism
1843
Medical Dictionary
melanism
playMedical Definition of melanism
1: an increased amount of black or nearly black pigmentation (as of skin, feathers, or hair) of an individual or kind of organism
2: intense human pigmentation in skin, eyes, and hair
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