| 释义 |
prosthion Anat.|ˈprɒsθiːɒn|
[Neut. of Gr. πρόσθιος foremost (f. πρόσθεν before, in front): cf. -ion2.]
The lowest or the most forward point of the maxilla between the two central incisors.
1925Biometrika XVII. 55 If there be two points used, the prosthion and the alveolar point..then the computation of the angles and sides of the fundamental triangle of the skull becomes impossible. 1933Jrnl. R. Anthrop. Inst. LXIII. 42 Some modern craniometricians speak of the prosthion and the alveolar point as if they were coincident. 1937Amer. Jrnl. Physical Anthrop. XXII. 486 Prosthion has..been generally used to designate both the most forward and the lowest points, in accordance with the measurement being taken. The distinction is made, however, by Buxton and Morant, who call the most forward point prosthion and the lowest the alveolar point. 1937[see nasion]. 1974Moore & Lavelle Growth of Facial Skeleton in Hominoidea iv. 196 Up to the stage of eruption of the first permanent molar, the face of the orang utan is growing strongly downwards and forwards. Subsequently, the face begins to tilt so that the prosthion, instead of moving downwards and forwards, moves forwards and somewhat upwards. |