melanoma

n. skin tumors characterized by malignant growth of melanocytes

Melanoma is a malignant tumor of melanocytes which are found predominantly in skin but also in the bowel and the eye (see uveal melanoma). It is one of the rarer types of skin cancer but causes the majority of skin cancer related deaths. Despite many years of intensive laboratory and clinical research, the sole effective cure is surgical resection of the primary tumor before it achieves a thickness greater than 1 mm.
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Melanoma /mel·a·no·ma/ a tumor arising from the melanocytic system of the skin and other organs; used alone, it refers to malignant m.. [more]Melanoma - Community and Resources

Noun
1. any of several malignant neoplasms (usually of the skin) consisting of melanocytes
(synonym) malignant melanoma
(hypernym) skin cancer

n. melanoma, skin tumors characterized by malignant growth of melanocytes