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ra·chis
 rachis
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- pronunciation:
- reI
kihs
| part of speech: |
noun |
| inflections: |
rachides, rachises |
| definition 1: |
the central axis or shaft of an inflorescence of a compound leaf.
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| definition 2: |
the shaft of a feather.
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| definition 3: |
the spinal column.
- similar words:
- back, backbone
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| derivation: |
rachial (adj.) |
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