Wollastonite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Wollastonite \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.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  wollastonite
       n : a white or grayish mineral typically found in metamorphic
           limestone; a silicate of calcium