Medical Dictionary
Main Entry:
pi·lo·ni·dal Pronunciation:
"pI-l&-'nId-&l Function:
adjective 1 : containing hair nested in acyst —used of congenitally anomalous cysts in the sacrococcygeal area that often become infected and discharge through a channel near the anus
2 : of, relating to, involving,or for use on pilonidal cysts, tracts, or sinuses