Dictionary entry

Wollastonite

Webster's Dictionary 1913

Wol″las‐ton‐ite (?), n. [After Dr. W. H. Wollaston, an English chemist, who died in 1828.] (Min.) A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar.