raphides
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ra·phide
(rā′fīd) also ra·phis (-fĭs)n. pl. raph·i·des (răf′ĭ-dēz′) or ra··phis·es
One of a bundle of needlelike crystals of calcium oxalate occurring in many plant cells.
[French, sing. of raphides, from New Latin, from Greek rhaphides, pl. of rhaphis, needle, from rhaptein, to sew; see wer- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
raph•i•des
(ˈræf ɪˌdiz)n.pl.
needle-shaped crystals, usu. composed of calcium oxalate, that occur in bundles in the cells of many plants.
[1835–45; < New Latin < Greek rhaphídes, pl. of rhaphís needle]
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