orthosilicate

  1. Noun.  (chemistry) any salt or ester of orthosilicic acid, (M+)4SiO44− or Si(OR)4.
  2. Noun.  (mineralogy) any silicate mineral, such as garnet or olivine, in which the SiO4 tetrahedra do not share oxygen atoms with each other.

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This entry was last updated on RefTopia from its source on 3/20/2012.