raphis

raph·i·des

[raf-i-deez]
plural noun, singular ra·phide [rey-fahyd] , ra·phis [rey-fis] . Botany.
acicular crystals, usually composed of calcium oxalate, that occur in bundles in the cells of many plants.

Origin:
1835–45; < Neo-Latin < Greek rhaphídes, plural of rhaphís needle

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
raphide or raphis (ˈreɪfaɪd, ˈreɪfɪs) [Click for IPA pronunciation guide]
 
n , pl raphides
any of numerous needle-shaped crystals, usually of calcium oxalate, that occur in many plant cells as a metabolic product
 
[C18: from French, from Greek rhaphis needle]
 
raphis or raphis (ˈreɪfaɪd, ˈreɪfɪs, ˈræfɪˌdiːz) [Click for IPA pronunciation guide]
 
n
 
[C18: from French, from Greek rhaphis needle]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Raphis is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
American Heritage
Science Dictionary
raphide   (rā'fīd)  Pronunciation Key 
Plural raphides (rāf'ĭ-dēz')
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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