ethmoidal crest

n.
  1. A ridge on the nasal surface of the upper jawbone that attaches to the middle nasal concha.nasal concha
  2. A ridge on the palatine bone to which the middle nasal concha attaches.nasal concha
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.