[per-ee-oh-nik-ee-uh m]

noun, plural per·i·o·nych·i·a [per-ee-oh-nik-ee-uh] /ˌpɛr i oʊˈnɪk i ə/. Anatomy.

the epidermis surrounding the base and sides of a fingernail or toenail.

Origin of perionychium

From New Latin, dating back to 1900–05; see origin at perionychia1, -ium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for perionychium


noun plural -ia (-ɪə)

the skin that surrounds a fingernail or toenail

Word Origin for perionychium

C19: New Latin, from peri- + Greek onux a nail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

perionychium in Medicine



n. pl. per•i•o•nych•i•a (-ē-ə)

The border of epidermal tissue surrounding a fingernail or toenail.nail skin
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.