Frontal sinus

Medical Dictionary

frontal sinus n.
A hollow formed on either side in the lower part of the squama of the frontal bone, communicating by the ethmoidal infundibulum with the middle meatus of the nasal cavity of the same side.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature