melanocytoma

noun
me·​la·​no·​cy·​to·​ma | \ -sī-ˈtō-mə How to pronounce melanocytoma (audio) \
plural melanocytomas also melanocytomata\ -​mət-​ə How to pronounce melanocytomata (audio) \

Medical Definition of melanocytoma

: a benign tumor composed of melanocytes