Definition of Perionychium

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.


Last Editorial Review: 6/14/2012

Search MedTerms:


Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.