home >> biology >> definition In plants , the outermost layer of cells covering the leaves and young parts of a plant is the epidermis . Subcutis is the innermost layer containing loose connective tissues, fatty tissues and elastin, which acts as an intermediate link between the skin and bones. Skin is made up of three layers. Under the squamous cells are round cells called basal cells. Epidermis. Medical Definition of Epidermis. In invertebrates, the outermost layer of cells of the organism.. epidermis outer layer of skin cells Source: Noland, George B. The epidermis is mostly made up of flat, scale-like cells called squamous cells. C. V. Mosby . In vertebrates , epidermis is the outermost layer of the skin . Medical Author: William C. Shiel Jr., MD, FACP, FACR; Epidermis: The upper or outer layer of the two main layers of cells that make up the skin. It is the outermost, protoderm-derived layer of cells that covers seeds, fruits, flowers, leaves, roots, and stem parts. the outermost and nonvascular layer of the skin, derived from the embryonic ectoderm, varying in thickness from 0.07 to 1.4 mm. Definition of Skin Under the squamous cells are round cells called basal cells. The epidermis is an outer protective cell layer that provides protection against infection, mechanical injury and water loss in plants. It is mostly made up of flat, scale-like cells called squamous cells. epider´mides) (Gr.) epidermis definitions - from layers, to function, and structures. In vertebrates, epidermis is the outermost layer of the skin. Learn with flashcards, games, and more — for free. epidermis [ep″ĭ-der´mis] (pl. Louis, MO. See more. The epidermis is made of four main layers, or strata: The stratum corneum is the thick, tough outer layer. General Biology, 11th Edition.St. Definition: The epidermis is the outer layer of the three layers that make up the skin, the inner layers being the dermis and hypodermis. Content: Human Skin Layers. Its main purpose is protection. Although they serve a number of important functions, their primary role is to protect from a variety of harmful factors (environmental stressors) including microbes, chemical compounds as well as … Epidermis could refer to: In plants, the outermost layer of cells covering the leaves and young parts of a plant is the epidermis. The dermis is present beneath the epidermis layer that comprises a pilosebaceous unit, fibroblasts, collagen, mast cells and capillaries. Epidermis definition, the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium. The outermost is the epidermis. 1983. Definition - What does Epidermis mean? Epidermal cells include several types of cells that make up the epidermis of plants. 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