Pronunciation
- (British, America) IPA: /ˈɹeɪkɪs/
rachis (plural rachises)
- (obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine. [17th-19th c.]
- (zoology) An anatomical shaft or axis in a marine invertebrate. [from 18th c.]
- (ornithology) The central shaft of a feather. [from 19th c.]
- (botany) The main shaft of either a compound leaf, head of grain, or fern frond. [from 19th c.]
- Spanish: raquis
- Spanish: raquis
- Spanish: raquis
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