Medical Dictionary

eponychium

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noun ep·o·nych·i·um \ˌep-ə-ˈnik-ē-əm\

Medical Definition of eponychium

  1. 1:  the thickened layer of epidermal tissue over the developing fetal fingernail or toenail that disappears before birth except over the base of the nail

  2. 2:  the distal margin of the superficial layer of a proximal nail fold that is a horny band of epidermis extending over the base of a nail :  cuticle


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