[hahy-pog-nuh-thuh s]


having the lower jaw or mandible longer than the upper.

Origin of hypognathous

First recorded in 1870–75; hypo- + -gnathous
Related formshy·pog·na·thism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hypognathous

Historical Examples of hypognathous

British Dictionary definitions for hypognathous



having a lower jaw that protrudes beyond the upper jaw
(of insects) having downturned mouthparts
Derived Formshypognathism, 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

hypognathous in Medicine


[hī-pŏgnə-thəs, hī′pō-năthəs]


Having a congenitally underdeveloped lower jaw.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.