opisthognathism

opisthognathous

[op-is-thog-nuh-thuhs]
adjective Zoology.
having receding jaws.

Origin:
1860–65; opistho- + -gnathous

opisthognathism, noun
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opisthognathous (ˌɒpɪsˈθɒɡnəθəs)
 
adj
(of a person or animal) having receding jaws
 
[C19: from Greek opisthen behind + -gnathous]
 
opis'thognathism
 
n

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