pilonidal

adjective
pi·​lo·​ni·​dal | \ ˌpī-lə-ˈnī-dᵊl How to pronounce pilonidal (audio) \

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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Time Traveler for pilonidal

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The first known use of pilonidal was in 1880

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Cite this Entry

“Pilonidal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pilonidal. Accessed 4 Dec. 2020.

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More Definitions for pilonidal

pilonidal

adjective
pi·​lo·​ni·​dal | \ ˌpī-lə-ˈnīd-ᵊl How to pronounce pilonidal (audio) \

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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