melanosis

[mel-uh-noh-sis]

noun Pathology.

abnormal deposition or development of black or dark pigment in the tissues.
a discoloration caused by this.

Origin of melanosis

1815–25; < New Latin < Late Greek melánōsis a becoming black. See melan-, -osis

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for melanosis

Historical Examples of melanosis

In chronic cases the eventual effects are anaemia, melanosis, enlargement of the spleen and liver, and general cachexia.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 4
Various
He is stated to have died of "melanosis of the lungs," a disease in which the whole substance of the lungs turns completely black.
Kalli, the Esquimaux Christian
Thomas Boyles Murray

British Dictionary definitions for melanosis

melanosis

melanism (ˈmɛləˌnɪzəm)

noun

pathol a skin condition characterized by excessive deposits of melanin

Derived Formsmelanotic (ˌmɛləˈnɒtɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for melanosis

1823, medical Latin, from Greek melanosis "a becoming black," from melanoun "to become black," from melas (genitive melanos); see melanin. Related: Melanotic.

melanosis in Medicine

melanosis

[mĕl′ə-nō′sĭs]

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

Related formsmel′a•not′ic (-nŏt′ĭk) adj.