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tympanomastoid fissure in Medicine

tympanomastoid fissure

(tĭm′pə-nō-măstoid′)
n.
  1. A fissure that separates the tympanic portion from the mastoid portion of the temporal bone and transmits the auricular branch of the vagus nerve.auricular fissure
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.