melanocytoma

[mĕl′ə-nō-sī-tōmə]

n.

A benign neoplasm composed of melanocytes.
A usually benign, deeply pigmented melanoma of the optic disk.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.