[ney-thee-on, nath-ee-]
Craniometry. the lowest point on the anterior margin of the lower jaw in the midsaggital plane.

1885–90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
gnathion (ˈneɪθɪˌɒn, ˈnæθ-)
the lowest point of the midline of the lower jaw: a reference point in craniometry
[C19: from New Latin, from Greek gnathos jaw]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

gnathion gnath·i·on (nāth'ē-ŏn', nā'thē-)
The most inferior point of the mandible in the midline.

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