[prog-nuh-thuh s, prog-ney-]
having protrusive jaws; having a gnathic index over 103.
Related formsprog·na·thism [prog-nuh-thiz-uh m] /ˈprɒg nəˌθɪz əm/, prog·na·thy, nounhy·per·prog·na·thous, adjective
Also prog·nath·ic [prog-nath-ik] /prɒgˈnæθ ɪk/
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for prognathism
Historical Examples of prognathism
There is no tendency to prognathism, as in some of the Celts.
The lips are thick and bowed, but there is little or no prognathism.
It presents no indication of the prognathism which modifies the facial angle.
Some prognathism is common among Fijians, both total and mid-facial, but the condition is not universal nor pronounced.
Prognathism, the projection of the lower portion of the face beyond the forehead, is found in 45.7% of criminals.
British Dictionary definitions for prognathism
Derived Formsprognathism (ˈprɒɡnəˌθɪzəm), noun
having a projecting lower jaw
Word Origin for prognathous
C19: from pro- ² + Greek gnathos jaw
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
Word Origin and History for prognathism
1836, from pro- + Greek gnathos "jaw" (see gnathic) + -ous. Related: Prognathic.
Online Etymology Dictionary, © 2010 Douglas Harper
Related formsprog′na•thism (-nə-thĭz′əm) n.
Having jaws that project forward to a marked degree.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.