pilonidal


pi·lo·ni·dal

adjective \ˌpī-lə-ˈnī-dəl\

Definition of PILONIDAL

:  of, relating to, or being a hair-containing cyst of the skin in the lower-back region near the upper crease of the buttocks

Origin of PILONIDAL

Latin pilus hair + nidus nest
First Known Use: 1880

pi·lo·ni·dal

adjective \ˌpī-lə-ˈnīd-əl\   (Medical Dictionary)

Medical Definition of PILONIDAL

1
: containing hair nested in a cyst—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

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