A condition characterized by numerous, widespread lesions of melanoma. [melanoma + G. -osis, condition]
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mel·a·no·ma·to·sis -.nō-mə-'tō-səs n, pl -to·ses -.sēz the condition of having multiple melanomas in the body
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mel·a·no·ma·to·sis (mel″ə-no″mə-toґsis) the formation of melanomas in various parts of the body.Medical dictionary. 2011.