- straight-jawed; having the profile of the face vertical or nearly so; having a gnathic index below 98.
Also or·thog·nath·ic [awr-thuh g-nath-ik, -thog-] /ˌɔr θəgˈnæθ ɪk, -θɒg-/.
Origin of orthognathous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for orthognathous
The "gnathic index" is said to show that Europeans and Bushmen are orthognathous.The Black Man's Place in South Africa
There is little or no brow prominence and one at least of the skulls is as orthognathous in facial angle as that of a European.Man, Past and Present
Agustus Henry Keane
I do not see that an orthognathous face would cost more than a prognathous face; or a good morale than a bad one.More Letters of Charles Darwin Volume II
At its northeastern end is the most round-headed, orthognathous, straight-haired, and yellow-skinned race.Man And His Ancestor
- anatomy having normally aligned jaws
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012