pilonidal

adjective
pi·​lo·​ni·​dal | \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

First Known Use of pilonidal

1880, in the meaning defined above

History and Etymology for pilonidal

Latin pilus hair + nidus nest

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Dictionary Entries near pilonidal

pilomotion

pilon

piloncillo

pilonidal

pilori

Pílos

Pilosa

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The first known use of pilonidal was in 1880

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More Definitions for pilonidal

pilonidal

adjective
pi·​lo·​ni·​dal | \ˌpī-lə-ˈnīd-ᵊl \

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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