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Noun: aluminosilicate  u'loo-mi-now'si-li,keyt
  1. (inorganic chemistry) any of many silicate minerals, such as feldspar and zeolite, in which a proportion of the Si4+ ions are replaced by Al3+, the excess negative charge being balanced by extra sodium, potassium or calcium ions

Derived forms: aluminosilicates

Encyclopedia: Aluminosilicate