[ pawr-ee-on, pohr- ]
/ ˈpɔr iˌɒn, ˈpoʊr- /

noun, plural po·ri·a [pawr-ee-uh, pohr-] /ˈpɔr i ə, ˈpoʊr-/, po·ri·ons. Craniometry.

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. 2019

Examples from the Web for porion

  • The most familiar type of this form of apparatus is the Porion evaporator.

    The Manufacture of Paper|Robert Walter Sindall

Medicine definitions for porion


[ pôrē-ŏn′ ]

n. pl. po•ri•a (pôrē-ə)

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.