noun, plural perionychia [per-ee-oh-nik-ee-uh] . Anatomy.
the epidermis surrounding the base and sides of a fingernail or toenail.

1900–05; < Neo-Latin; see perionychia1, -ium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
perionychium (ˌpɛrɪəʊˈnɪkɪəm)
n , pl -ia
the skin that surrounds a fingernail or toenail
[C19: New Latin, from peri- + Greek onux a nail]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

perionychium per·i·o·nych·i·um (pěr'ē-ə-nĭk'ē-əm)
n. pl. per·i·o·nych·i·a (-ē-ə)
The border of epidermal tissue surrounding a fingernail or toenail. Also called nail skin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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