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[pawr-ee-on, pohr-] /ˈpɔr iˌɒn, ˈpoʊr-/
noun, plural poria
[pawr-ee-uh, pohr-] /ˈpɔr i ə, ˈpoʊr-/ (Show IPA),
porions. 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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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  • The most familiar type of this form of apparatus is the porion evaporator.

    The Manufacture of Paper Robert Walter Sindall
porion in Medicine

porion po·ri·on (pôr'ē-ŏn')
n. pl. po·ri·a (pôr'ē-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.
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