dermatomycosis Syllabification: (der·mat·o·my·co·sis)Pronunciation: /dərˌmatəˌmīˈkōsis, ˈdərmətō-/Definition of dermatomycosis noun (plural dermatomycoses /-ˌsēz/) a fungal infection of the skin, especially by a dermatophyte. dermatomycosis in other Oxford dictionaries Definition of dermatomycosis in the British & World English dictionary