MELANISM
melanosis, melanism
(noun) a condition characterized by abnormal deposits of melanin (especially in the skin)
Source: WordNet® 3.1
Etymology
Noun
melanism (countable and uncountable, plural melanisms)
Congenital excess of melanin pigmentation in the skin, hair, feathers and/or eyes.
Antonyms
• albinism, albinoism
Source: Wiktionary
Mel"a*nism, n. Etym: [Gr. , , black.]
1. An indue development of dark-colored pigment in the skin or its
appendages; -- the opposite of albinism.
2. (Med.)
Definition: A disease; black jaundice. See Mel.
Source: Webster’s Unabridged Dictionary 1913 Edition