[awr-thog-nuh-thuh s]
Also or·thog·nath·ic [awr-thuh g-nath-ik, -thog-] /ˌɔr θəgˈnæθ ɪk, -θɒg-/.

Origin of orthognathous

First recorded in 1850–55; ortho- + -gnathous
Related formsor·thog·na·thism [awr-thog-nuh-thiz-uh m] /ɔrˈθɒg nəˌθɪz əm/, or·thog·na·thy, nounhy·per·or·thog·na·thous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for orthognathous

Historical Examples of orthognathous

  • The "gnathic index" is said to show that Europeans and Bushmen are orthognathous.

  • 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.

  • At its northeastern end is the most round-headed, orthognathous, straight-haired, and yellow-skinned race.

    Man And His Ancestor

    Charles Morris

British Dictionary definitions for orthognathous


  1. anatomy having normally aligned jaws
Derived Formsorthognathism or orthognathy, noun
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