Meaning of aluminum silicate

alu'minum sil'icate

Pronunciation: [key]
  1. any of a group of naturally occurring, water-insoluble substances, obtained from clay or synthesized, containing varying amounts of oxides of aluminum and silicon, AlO and SiO, and used in the manufacture of glass, ceramics, paints, printing inks, rubber, and plastics. Cf. mullite.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.