dermatology

from WordNet (r) 3.0 (2006)

dermatology
    n 1: the branch of medicine dealing with the skin and its
         diseases

from The Collaborative International Dictionary of English v.0.48

Dermatology \Der`ma*tol"o*gy\, n. [Gr. de`rma, -atos, skin +
   -logy: cf. F. dermatologie.]
   The science which treats of the skin, its structure,
   functions, and diseases.
   [1913 Webster]