basion

n. 底穴(枕骨大孔缘的中点)

词形变化

basions 复数 basions

释义与例句

n.
  1. 1.

    The middle of the anterior margin of the foramen magnum of the skull.

    医学

    The tectorial membrane limits extension, while odontoid impaction on the basion limits flexion.

词源

From New Latin, equivalent to basi- (“base”) + -ion (“cephalometric reference point”).

来源：wiktionary