the nonliving epidermis that surrounds the edges of the fingernail or toenail.
the epidermis.
a superficial integument, membrane, or the like.
Also calledthe outer, noncellular layer of the arthropod integument, composed of a mixture of chitin and protein and commonly containing other hardening substances as well.
a very thin hyaline film covering the surface of plants, derived from the outer surfaces of the epidermal cells.