noun Craniometry.
the most forward projecting point of the anterior surface of the upper jaw, in the midsagittal plane.

1920–25; < Greek prósthion, neuter of prósthios frontal, akin to prósthen forward

prosthionic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

prosthion pros·thi·on (prŏs'thē-ŏn')
The most anterior point on the maxillary alveolar process, between the central incisor teeth. Also called alveolar point.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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