melanism

/ˈmɛlənɪzəm/
noun
  1. A condition in which an animal or plant has an unusually high amount of dark pigment, making it appear black or very dark.
    • Some snakes display melanism, which helps them absorb heat more efficiently in cooler climates.
    • Scientists study industrial melanism in moths to understand how pollution affects evolution.
    • Melanism in leopards creates what are commonly called black panthers.
Antonyms
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