- the most lateral point in the roof of the bony external auditory meatus.
Origin of porion
1905–10; < New Latin < Greek pór(os) passage, way (see pore2) + -ion diminutive suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for porion
Historical Examples of porion
The most familiar type of this form of apparatus is the Porion evaporator.The Manufacture of Paper
Robert Walter Sindall
- The central point on the upper margin of the external auditory meatus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.