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pro- +‎ -gnathous


prognathous ‎(comparative more prognathous, superlative most prognathous)

  1. Having jaws that project forward more than is usual.
    • 1918, Edgar Rice Burroughs, “VIII”, in The Land That Time Forgot:
      A huge brute with thick lips and prognathous jaw stood at her shoulder. He was talking loudly and gesticulating wildly.
    • 2013, Adam Slipinski, Australian Beetles Volume 1: Morphology, Classification and Keys[1]:
      Phycosecids are small, ovate, convex beetles with a prognathous head, partly covered by a semicircular projection of the pronotum and a dorsal vestiture of whitish scales or scalelike setae.