Online Encyclopedia

PROGNATHISM (Gr. 7rpb, forward, and y...

Online Encyclopedia
Originally appearing in Volume V22, Page 424 of the 1911 Encyclopedia Britannica.
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PROGNATHISM (Gr. 7rpb, forward, and yv&Oos, jaw), the term applied by ethnologists, with its opposite Orthognathism (6pe6s, straight), to describe the varying degrees of projection of the upper jaw, which itself is determined by the angle made by the whole face with the brain-cap. Eurygnathism (eupus, wide), is the lateral projection of jawbones so characteristic of the Mongolic races. (See CRANIOMETRY.)
End of Article: PROGNATHISM (Gr. 7rpb, forward, and yv&Oos, jaw)
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