[prog-nuh-thuh s, prog-ney-]
- having protrusive jaws; having a gnathic index over 103.
Also prog·nath·ic [prog-nath-ik] /prɒgˈnæθ ɪk/.
Origin of prognathous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for 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.The Wild Tribes of Davao District, Mindanao</p>
It presents no indication of the prognathism which modifies the facial angle.A Journey to the Centre of the Earth
Some prognathism is common among Fijians, both total and mid-facial, but the condition is not universal nor pronounced.A Racial Study of the Fijians
Norman E. Gabel
Prognathism, the projection of the lower portion of the face beyond the forehead, is found in 45.7% of criminals.Criminal Man
- having a projecting lower jaw
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
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.