- Epidermis is defined as the outer layer of skin, cells or tissue.
The skin on your body is an example of epidermis.
The epidermis is the top layer in this cross section of human skin.Licensed from iStockPhoto
- the outermost layer of the skin in vertebrates, having no blood vessels and consisting of several layers of cells, covering the dermis
- the outermost layer of cells covering seed plants and ferns
- any of various other integuments
Origin: Late Latin ; from Classical Greek ; from epi-, upon (see epi-) plush derma, the skin: see derma
Used by arrangement with John Wiley & Sons, Inc.
- The outer, protective, nonvascular layer of the skin of vertebrates, covering the dermis.
- An integument or outer layer of various invertebrates.
- The outermost layer of cells covering the leaves and young parts of a plant.
Origin: Late Latin, from Greek : epi-, epi- + derma, skin; see der- in Indo-European roots.
- epˌi·derˈmal , epˌi·derˈmic adjective
epidermis - Cultural Definition
The outside layers of the skin.
epidermis - Medical Definition
- epidermal , epˌi·derˈmic adjective
epidermis - Science Definition
- The protective outer layer of the skin. In invertebrate animals, the epidermis is made up of a single layer of cells. In vertebrates, it is made up of many layers of cells and overlies the dermis. Hair and feathers grow from the epidermis.
- The outer layer of cells of the stems, roots, and leaves of plants. In most plants, the epidermis is a single layer of cells set close together to protect the plant from water loss, invasion by fungi, and physical damage. The epidermis that is exposed to air is covered with a protective substance called cuticle. See more at photosynthesis.
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