xanthomatosis

noun
xan·​tho·​ma·​to·​sis | \ (ˌ)zan-ˌthō-mə-ˈtō-səs How to pronounce xanthomatosis (audio) \
plural xanthomatoses\ -​ˌsēz How to pronounce xanthomatoses (audio) \

Medical Definition of xanthomatosis

: a condition marked by the presence of multiple xanthomas