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raphide

/ ˈreɪfɪs; ˈreɪfaɪd /

noun

  1. any of numerous needle-shaped crystals, usually of calcium oxalate, that occur in many plant cells as a metabolic product

raphide

/ rā′fīd /

, Plural raphides răf′ĭ-dēz′

  1. One of a bundle of needlelike crystals of calcium oxalate occurring in many plant cells. The crystals discourage animals from eating the plant by irritating their tissues.

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Word History and Origins

Origin of raphide1

C18: from French, from Greek rhaphis needle

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raphiaraphides

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