| 单词 | orbital index |
| 释义 | > as lemmasorbital index 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. orbital index orbital index n. [after French indice orbitaire (P. Broca 1874, in Mém. d'Anthropol. 2 69)] Physical Anthropology an indicator of the size and shape of the orbit (orbit n. 1), obtained by multiplying the ratio of its width to its height by 100. ΘΚΠ the world > life > the body > structural parts > bone or bones > skull > skull measurement > [noun] cephalic index1866 index1866 cranial index1868 orbital index1877 1877 Jrnl. Anthropol. Inst. 6 36 (table) Measurements of Cissbury Skeleton... Orbital index..·83 [cubic inches]. 1879 tr. A. de Quatrefages de Bréau Human Species xxx. 388 The smallest orbital index known is that of the old man of Cro-Magnon, which we have seen to be 61·36. 1984 Current Anthropol. 25 505/2 The angle between nasal bones and profile line large, and the orbital index lower than average. < as lemmas |
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