From Biology-Online Dictionary | Biology-Online Dictionary


1. An abnormal darkening of the skin by deposition of excess melanin.

2. Hyperpigmentation of the skin by melanin or deposition of dark metallic substances such as silver and iron.

Origin: melano-_ G. Derma, skin

Melanoderma cachecticorum, melanoderma of the cachectic, occurring in certain chronic diseases, such as malaria and tuberculosis.