Wollastonite
Pronunciation : Wol"las*ton*ite
Part of Speech : n.
Etymology : [After Dr. W. H. Wollaston, an English chemist, who died in 1828.] (Min.)
Definition : Defn: A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar.
Source : Webster's Unabridged Dictionary, 1913