This document defines medical terms related to the integumentary system. It breaks terms down into categories of dermato-, melan-, -derma, and oncho-. Terms defined include dermatosis, an abnormal skin condition; dermatologist, a skin specialist; dermatitis, skin inflammation; and dermatopathy, a skin disease. Melanocyte refers to a black cell and melanoma to a black tumor. Terms with -derma describe conditions of the skin like ichthyoderma meaning scaly skin and leukoderma meaning white skin. Onch terms are related to nails, such as onchomalacia describing softening of the nails and onchomycosis an abnormal nail fungus condition.