[pawr-ee-on, pohr-]
noun, plural poria [pawr-ee-uh, pohr-] , porions. Craniometry.
the most lateral point in the roof of the bony external auditory meatus.

1905–10; < Neo-Latin < Greek pór(os) passage, way (see pore2) + -ion diminutive suffix

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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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