nasion
鼻根點; 鼻根中點
na·si·on /ˈnezɪˌɑn/ 名詞
鼻根點
Na·si·on n. Anat. The middle point of the nasofrontal suture.
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nasion
n : the craniometric point at the bridge of the nose where the
frontal and nasal bones of the skull meet