sphenoidal sinus

n.

Either of a pair of cavities in the body of the sphenoid bone that communicate with the nasal cavity.

Nearby words

  1. sphenographic,
  2. sphenography,
  3. sphenoid,
  4. sphenoid bone,
  5. sphenoid crest,
  6. sphenoidal spine,
  7. sphenoiditis,
  8. sphenoidotomy,
  9. sphenopalatine artery,
  10. sphenopalatine foramen


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.