Origin of pilonidal

From New Latin, dating back to 1875–80; see origin at pile3, -o-, nidus, -al1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

pilonidal in Medicine


  1. Of or relating to a growth of hair in a dermoid cyst or in the deeper layers of the skin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.