dermatologyPronunciation: /ˌdəːməˈtɒlədʒi/Definition of dermatology noun [mass noun] the branch of medicine concerned with the diagnosis and treatment of skin disorders. Derivatives dermatologic adjective dermatologicalPronunciation: /-təˈlɒdʒɪk(ə)l/ adjective dermatologically adverb dermatologist noun dermatology in other Oxford dictionaries Definition of dermatology in the US English dictionary