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The Collaborative International Dictionary
Rachides

Rachis \Ra"chis\ (r[=a]"k[i^]s), n.; pl. E. Rachises (r[=a]"k[i^]s*[e^]z), L. Rachides (r[a^]k"[i^]*d[=e]z).

  1. (Anat.) The spine; the vertebral column.

  2. (Bot. & Zo["o]l.) Same as Rhachis.

Wiktionary
rachides

n. (plural of rachis English)

WordNet
rachides

See rhachis