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petrosquamosal

(pĕt′rō-skwə-mōsəl)
adj.
  1. Of or relating to the petrous and the squamous portions of the temporal bone of the skull.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.