hypognathous

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hy·pog·na·thous

(hī-pog'na-thŭs), In the diphthong gn, the g is silent only at the beginning of a word.
Having a congenitally defectively developed small lower jaw.
[hypo- + G. gnathos, jaw]

hy·pog·na·thous

(hī-pog'nă-thŭs)
Having an abnormally small mandible.
[hypo- + G. gnathos, jaw]

hypognathous

having the lower jaw longer than the upper jaw.

hy·pog·na·thous

(hī-pog'nă-thŭs) In the diphthong gn, the g is silent only at the beginning of a word.
Having a congenitally defectively developed small lower jaw.
[hypo- + G.gnathos, jaw]