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 (prŏg′nə-thəs, prŏg-nā′-) also prog·nath·ic (prŏg-năth′ĭk, -nā′thĭk)
Having jaws or mouthparts that project forward to a marked degree.

prog′na·thism (-nə-thĭz′əm) n.


(prɒɡˈneɪθəs) or


(Anatomy) having a projecting lower jaw
[C19: from pro-2 + Greek gnathos jaw]
prognathism n


(ˈprɒg nə θəs, prɒgˈneɪ-)

also prog•nath•ic

(prɒgˈnæθ ɪk)

having protrusive jaws.
[1830–40; pro-2 + -gnathous]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.prognathous - having a projecting lower jaw
opisthognathous - having receding jaws


a. prognato-a, que tiene la mandíbula prominente.
References in classic literature ?
The next most obvious deformity was in their faces, almost all of which were prognathous, malformed about the ears, with large and protuberant noses, very furry or very bristly hair, and often strangely-coloured or strangely-placed eyes.
A huge brute with thick lips and prognathous jaw stood at her shoulder.
In order to discover the necessary area, Nature had given him an enormous prognathous jaw.
This malignant and terrible contortion, combined with the low forehead, blunt nose, and prognathous jaw gave the dead man a singularly simious and ape-like appearance, which was increased by his writhing, unnatural posture.
Because its prognathous recoil-spring guide rod presses where the muzzle presses, it prevents the slide from coming out of battery, thus giving you stand-off capability.