Know how to use "fewer" and "less"? Find out.
1819, from dermato- + -logy. Related: Dermatological.
dermatology der·ma·tol·o·gy (dûr'mə-tŏl'ə-jē)n. The branch of medicine that deals with the diagnosis and treatment of skin diseases.
The branch of medicine devoted to the study and care of the skin.