opisthognathous

op·is·thog·na·thous

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

Origin:
1860–65; opistho- + -gnathous

op·is·thog·na·thism, noun
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World English Dictionary
opisthognathous (ˌɒpɪsˈθɒɡnəθəs) [Click for IPA pronunciation guide]
 
adj
(of a person or animal) having receding jaws
 
[C19: from Greek opisthen behind + -gnathous]
 
opis'thognathism
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Opisthognathous is always a great word to know.
So is doohickey. Does it mean:
a scrap or morsel of food left at a meal.
a gadget; dingus; thingumbob.
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