The Collaborative International Dictionary
raphides
Rhaphides \Rhaph"i*des\, n. pl. [NL., fr. Gr. ???, ???, a needle, F. raphides.] (Bot.) Minute transparent, often needle-shaped, crystals found in the tissues of plants. [Written also raphides.]
Wiktionary
raphides
n. (plural of raphide English)
WordNet
raphides
See raphide