Bisilicate

1 definition found

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

  Bisilicate \Bi*sil"i*cate\, n. (Min. Chem.)
     A salt of metasilicic acid; -- so called because the ratio of
     the oxygen of the silica to the oxygen of the base is as two
     to one. The bisilicates include many of the most common and
     important minerals.
     [1913 Webster]