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eponychium
eponychium (ˌɛpəˈnɪkɪəm) n (Anatomy) the quick, or cuticle at the base of the naileponychium
eponychium[‚ep·ə′nik·ē·əm] (anatomy) The horny layer of the nail fold attached to the nail plate at its margin; represents the remnant of the embryonic condition. (embryology) A horny condition of the epidermis from the second to the eighth month of fetal life, indicating the position of the future nail. eponychium
eponychium [ep″o-nik´e-um] 1. cuticle.2. the horny fetal epidermis at the site of the future nail.ep·o·nych·i·um (ep'ō-nik'ē-ŭm), 1. The corneal layer of epidermis overlapping and in direct contact with the nail root proximally or the sides of the nail plate laterally, forming the undersurface of the nail wall or nail folds. Synonym(s): hidden nail skin, perionychium2. The thin, condensed, eleidin-rich layer of epidermis that precedes and initially covers the nail plate in the embryo. It normally degenerates by the eighth month except at the nail base where it remains as the cuticle of the nail. 3. The thin skin adherent to the nail at its proximal portion. Synonym(s): epionychium [G. epi, upon, + onyx (onych-), nail] ep·o·nych·i·um (ep'ō-nik'ē-ŭm) [TA] 1. The thin, condensed, eleidin-rich layer of epidermis that precedes and initially covers the nail plate in the embryo. It normally degenerates by the eighth month, except at the nail base, where it remains as the cuticle of the nail. 2. The corneal layer of epidermis overlapping and in direct contact with the nail root proximally or the sides of the nail plate laterally, forming the undersurface of the nail wall or nail folds.
Synonym(s): perionychium. 3. The thin skin adherent to the nail at its proximal portion. [G. epi, upon, + onyx (onych-), nail] |