melanosis noun. 
[mɛlǝ'nǝʊsɪs] Pl. -noses 
[-'nǝʊsi:z]. 
E19.[mod. Latin, from Greek melan-, melas black + -OSIS.]Medicine.
1.  Abnormal or excessive development of melanin in the skin or other tissue; a discoloration due to this. 
E19.2.  = 
MELANOMA. 
M19.  [TahlilGaran] English Dictionary ▲