petrosa

petrosa definition - medical

pe·tro·sa (pə-trōˈsə)

noun pl. pe·tro·sae (-sē)
The petrous portion of the temporal bone.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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