upper epidermis plant definition
epidermis. n. 1. (Biology) Also called: cuticle the thin protective outer layer of the skin, composed of stratified epithelial tissue. 2. (Anatomy) the outer layer of cells of an invertebrate. 3. (Botany) the outer protective layer of cells of a plant, which may be thickened by a cuticle.air and feathers grow from the epidermis. 2. The outer layer of cells of the stems, roots, and leaves of plants. The cells of the epidermis are set close together to protect the plant from water loss, invasion by fungi, and physical damage.