raphide noun. ['reɪfʌɪd] Also (now rare) raphis ['reɪfɪs]. Pl. raphides [-ɪdi:z]. M19.
[(French from) Greek rhaphid-, rhaphis needle.]
Botany. Any of the needle-like calcium oxalate crystals occurring in bundles in the vegetative parts of certain flowering plants. Usu. in pl.

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