nounWord forms: plural ˈraphiˌdes (ˈræfəˌdiz
; rafˈədēzˌ; ˈreɪfɪdz
Botany a needle-shaped crystal, usually of calcium oxalate, developed singly, or more often in bundles, in a plant cell
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'raphide'
ModL < Gr rhaphis
), needle: for IE base see raphe