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- Dictionaryepidermis/ˌɛpɪˈdəːmɪs/
noun
- 1. the surface epithelium of the skin, overlying the dermis.
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noun
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The epidermis is the outermost of the three layers that comprise the skin, the inner layers being the dermis and hypodermis. The epidermis layer provides a barrier to infection from environmental pathogens and regulates the amount of water released from the body into the atmosphere through transepidermal water loss. Wikipedia