prog·​na·​thous | \ ˈpräg-nə-thəs How to pronounce prognathous (audio) \

Definition of prognathous

: being or having a jaw and typically a lower jaw that projects forward especially to an unusual degree The umpire, a veteran of dim visage with a cigarette jutting out from his prognathous jaw, was diligent about sweeping the plate, but his strike zone tended to bounce.— Richard Conniff a prognathous fish

Examples of prognathous in a Sentence

Recent Examples on the Web

The whole universe is under attack from Thanos, an infinitely villainous villain sporting a multicleft, prognathous chin. Joe Morgenstern, WSJ, "Review: ‘Avengers’ Gets an Incomplete," 25 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prognathous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of prognathous

1836, in the meaning defined above

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The first known use of prognathous was in 1836

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prog·​na·​thous | \ ˈpräg-nə-thəs How to pronounce prognathous (audio) \

Medical Definition of prognathous

: being or having an upper or lower jaw that projects abnormally forward

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