| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024na′sal in′dex, - Physical Anthropology, Anatomy[Craniom.](of the skull) the ratio of the distance from nasion to the lower margin of the nasal aperture to that of the maximum breadth of the nasal aperture.
- Anatomy[Cephalom.](of the head) the ratio of the maximum breadth of the external nose to its height from the nasal root to where the septum is confluent with the upper lip.
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