D defs.my
Entry 1 sense Webster, 1913

Wollastonite

· Wol·las·ton·ite · IPA
01 n. A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar.
  1. 1.
    A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar.(Min.)