Pronunciation: (kyOO'ti-kul),[key] —n. 1. the nonliving epidermis that surrounds the edges of the fingernail or toenail.
2. the epidermis.
3. a superficial integument, membrane, or the like.
4. Also called cuticula.Zool.the outer, noncellular layer of the arthropod integument, composed of a mixture of chitin and protein and commonly containing other hardening substances as well.
5. Bot.a very thin hyaline film covering the surface of plants, derived from the outer surfaces of the epidermal cells.