最終更新日：2024/07/30

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(obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine. / (zoology) An anatomical shaft or axis in a marine invertebrate. / (ornithology) The central shaft of a feather.

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rachis

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rachis

/ˈɹeɪkɪs/

noun

(obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine. / (zoology) An anatomical shaft or axis in a marine invertebrate. / (ornithology) The central shaft of a feather.