from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having jaws that project forward to a marked degree.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having jaws that project forward more than is usual

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having the jaws projecting beyond the upper part of the face; -- opposed to orthognathous. See Gnathic index, under gnathic.

from The Century Dictionary and Cyclopedia

  • Same as prognathic: opposed to opisthognathous and orthognathous.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. having a projecting lower jaw


from Wiktionary, Creative Commons Attribution/Share-Alike License

pro- + -gnathous


  • The facial part of the skull with a facial angle up to 82 is called prognathous; with an angle of 83 to

    The Catholic Encyclopedia, Volume 12: Philip II-Reuss

  • The Australian skull belongs to that variety called the prognathous, or narrow elongated variety; yet it is not so striking an example of this variety as the Negro skull.

    The Bushman — Life in a New Country

  • Smith is an ape-like man with “an enormous prognathous jaw,” large yellow teeth, and eyes that are also yellow and muddy.

    Le Milieu, Le Moment, La Race: Literary Naturalism in Jack London's White Fang

  • In order to discover the necessary area, Nature had given him an enormous prognathous jaw.

    The Mad God

  • The rough hand of the New World had been laid upon the Scotsman from his boyhood; but sterling honesty was written in every line of his bitter-seamed face, while a prognathous jaw proclaimed to the onlooker that honesty was the best policy, -- for the onlooker at any rate, should he wish to do business with the owner of the jaw.


  • Does this mean that neither Bowen's prognathous jaw, nor his unmasticated prose, will dis-grace our screens in the future?

    On Thursday, the Legg report will be published along with...

  • If your business is big, you get behind him and find a prognathous Westphalian with a retreating brow and the manners of a hog.

    [them] out of the closet

  • But it is singular to remark that, in another respect, the prognathous skulls are less ape-like than the orthognathous, the cerebral cavity projecting decidedly more beyond the anterior end of the axis in the prognathous, than in the orthognathous, skulls.


  • Southern Asia to Hindostan, would give us a sort of equator, around which round-headed, oval-headed, and oblong-headed, prognathous and orthognathous, fair and dark races — but none possessing the excessively marked characters of Calmuck or Negro — group themselves.


  • The diagrams in Figure 29 are reduced from very carefully made diagrams of sections of four skulls, two round and orthognathous, two long and prognathous, taken longitudinally and vertically, through the middle.



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