Source : Webster's Revised Unabridged Dictionary (1913)

Epidermis \Ep`i*der"mis\, n. [L., fr. Gr. ?; ? over + ? skin,
   fr. ? to skin. See {Tear}, v. t.]
   1. (Anat.) The outer, nonsensitive layer of the skin;
      cuticle; scarfskin. See {Dermis}.

   2. (Bot.) The outermost layer of the cells, which covers both
      surfaces of leaves, and also the surface of stems, when
      they are first formed. As stems grow old this layer is
      lost, and never replaced.

Source : WordNet®

epidermis
     n : the outer layer of the skin covering the exterior body
         surface of vertebrates [syn: {cuticle}]