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nasal meatus in Medicine

nasal meatus

n.
  1. Any of three passages, designated inferior, middle, and superior, in the nasal cavity that are formed by the projection of the ethmoidal crests.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.