The Collaborative International Dictionary of English v.0.48:
Raphides \Raph"i*des\ (r[a^]f"[i^]*d[=e]z), n. pl. [F. raphide.] (Bot.) See Rhaphides. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
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.] [1913 Webster]