Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Abnormally dark pigmentation of the skin or other tissues, resulting from a disorder of pigment metabolism.

from The Century Dictionary.

  • noun In pathology: An abnormal deposition of pigmentary matter in various organs or parts of the body, as the spleen, liver, or bone-marrow, associated with melanæmia, malarial poisoning, etc.
  • noun The condition of the system associated with the presence of pigmented tumors.

from the GNU version of the Collaborative International Dictionary of English.

  • (Med.) The morbid deposition of black matter, often of a malignant character, causing pigmented tumors.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun medicine The morbid deposition of black matter, often of a malignant character, causing pigmented tumours.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a condition characterized by abnormal deposits of melanin (especially in the skin)

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek a growing black.

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