The Collaborative International Dictionary of English v.0.48:
Epidermal \Ep`i*der"mal\, a. Of or pertaining to the epidermis; epidermic; cuticular. [1913 Webster]WordNet (r) 3.0 (2006):
epidermal adj 1: of or relating to a cuticle or cuticula [syn: cuticular, epidermal, epidermic, dermal]