- petrous; hard or stony.
- Anatomy. of or relating to the petrous portion of the temporal bone.
Origin of petrosal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for petrosal
Historical Examples of petrosal
If, in spite of this, bleeding still continues, it presumably comes from the petrosal sinus.
This is usually due to extension of the infection along the petrosal sinuses, or perhaps along the transverse sinus.
- anatomy of, relating to, or situated near the dense part of the temporal bone that surrounds the inner ear
Word Origin for petrosal
C18: from Latin petrōsus full of rocks, from petra a rock, from Greek
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Relating to or located near the petrous portion of the temporal bone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.