Akademik

Perionychium
The tissue surrounding the nail, whether it be a fingernail or a toenail, including the tissue bordering the root and sides of the nail. The word is composed of "peri-" meaning around or surrounding + the Greek word "onyx" for nail = around the nail.
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SYN: eponychium (2). [peri- + G. onyx, nail]

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peri·onych·i·um .per-ē-ō-'nik-ē-əm n, pl -ia -ē-ə the tissue bordering the root and sides of a fingernail or toenail

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peri·onych·i·um (per″e-o-nikґe-əm) eponychium.

Medical dictionary. 2011.