[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
- 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
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.