raphides

[raf-i-deez]

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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Raphides is always a great word to know.
So is sporophyte generation. Does it mean:
phase in plant life which starts with a zygote produced by sexual reproduction
organisms having pairs of homologous chromosomes
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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