| 单词 | index gnathic |
| 释义 | > as lemmasindex gnathic b. In Craniometry, A formula expressing the ratio of one diameter or other dimension of the skull to another, as index alveolar or index basilar, index cephalic, index facial, index gnathic, index nasal, orbital index, vertical index. Also, generally, in Anthropometry, The ratio of two dimensions of an organ or part to each other. ΘΚΠ the world > life > the body > structural parts > bone or bones > skull > skull measurement > [noun] cephalic index1866 index1866 cranial index1868 orbital index1877 1866 T. H. Huxley in S. Laing Pre-hist. Remains Caithness 83 The term cephalic index..indicates the ratio of the extreme transverse to the extreme longitudinal diameter of a skull, the latter measurement being taken as unity. 1882 Quain's Elements Anat. (ed. 9) I. 82 The proportion of this [the height of the skull] to the length..is the index of height. 1882 Quain's Elements Anat. (ed. 9) I. 83 The nasal index of Broca. 1882 Quain's Elements Anat. (ed. 9) I. 85 The orbital index is the ratio of the vertical height of the base of the orbit to the transverse width. < as lemmas |
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