der·ma·tol·o·gy / ˌdərməˈtäləjē/ • n. the branch of medicine concerned with the diagnosis and treatment of skin disorders.DERIVATIVES: der·ma·to·log·i·cal / -mətlˈäjikəl/ adj.der·ma·to·log·i·cal·ly / -mətlˈäjik(ə)lē/ adv.der·ma·tol·o·gist / -jist/ n.

dermatology (der-mă-tol-ŏji) n. the medical specialty concerned with the diagnosis and treatment of skin disorders.
—dermatological adj. —dermatologist n.http://www.bad.org.uk Website of the British Association of Dermatologists

dermatology Branch of medicine that deals with the diagnosis and treatment of skin diseases.