melanin

play
noun mel·a·nin \ˈme-lə-nən\

Definition of melanin

  1. :  any of various black, dark brown, reddish-brown, or yellow pigments of animal or plant structures (such as skin or hair)

Recent Examples of melanin from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'melanin'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of melanin

1843


MELANIN Defined for English Language Learners

melanin

play
noun

Definition of melanin for English Language Learners

  • : a dark brown or black substance that is a natural part of people's skin, hair, and eyes


Medical Dictionary

melanin

play
noun mel·a·nin \ˈmel-ə-nən\

Medical Definition of melanin

  1. :  any of various black, dark brown, reddish brown, or yellow pigments of animal or plant structures (as skin, hair, the choroid, or a raw potato when exposed to air); especially :  any of numerous animal pigments that are essentially polymeric derivatives of indole formed by enzymatic modification of tyrosine


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