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6 definitions found

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 gnathic index 名詞
 頜指數,頜突度

From: Webster's Revised Unabridged Dictionary (1913)

 Me·sog·na·thous a.  Anat. Having the jaws slightly projecting; between prognathous and orthognathous. See Gnathic index, under Gnathic.
 

From: Webster's Revised Unabridged Dictionary (1913)

 Or·thog·na·thous a.  Anat. Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to prognathous. See Gnathic index, under Gnathic.
 

From: Webster's Revised Unabridged Dictionary (1913)

 Prog·na·thous a.  Anat. Having the jaws projecting beyond the upper part of the face; -- opposed to orthognathous.  See Gnathic index, under Gnathic.
    Their countenances had the true prognathous character.   --Kane.
 

From: Webster's Revised Unabridged Dictionary (1913)

 Fa·cial a.  Of or pertaining to the face; as, the facial artery, vein, or nerve. -- Fa*cial*ly, adv.
 Facial angle Anat., the angle, in a skull, included between a straight line (ab, in the illustrations), from the most prominent part of the forehead to the front efge of the upper jaw bone, and another (cd) from this point to the center of the external auditory opening. See Gnathic index, under Gnathic.
 

From: Webster's Revised Unabridged Dictionary (1913)

 Gnath·ic a.  Anat. Of or pertaining to the jaw.
 Gnathic index, in a skull, the ratio of the distance from the middle of the nasofrontal suture to the basion (taken equal to 100), to the distance from the basion to the middle of the front edge of the upper jaw; -- called also alveolar index.
    Skulls with the gnathic index below 98 are orthognathous, from 98 to 103 mesognathous, and above 103 are prognathous.   --Flower.