silicate

(sili kit, -kāt′)

noun

a salt or ester derived from silica or a silicic acid

See silicate in American Heritage Dictionary 4

noun
  1. Any of numerous compounds containing silicon, oxygen, and one or more metals; a salt of silicic acid.
  2. Any of a large group of minerals, forming over 90 percent of the earth's crust, that consist of SiO2 or SiO4 groupings combined with one or more metals and sometimes hydrogen.

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