dermatology Syllabification: (der·ma·tol·o·gy)Pronunciation: /ˌdərməˈtäləjē/Definition of dermatology noun the branch of medicine concerned with the diagnosis and treatment of skin disorders. Derivatives dermatologicalPronunciation: /-mətlˈäjikəl/ adjective dermatologicallyPronunciation: /-mətlˈäjik(ə)lē/ adverb dermatologistPronunciation: /-jist/ noun dermatology in other Oxford dictionaries Definition of dermatology in the British & World English dictionary