One of the mysteries of the English language finally explained.
A salt containing the anion SiO₄ 4−; the anion itself; a salt or ester of orthosilicic acid; any mineral or other compound containing discrete tetrahedral SiO₄ anions.
Mid 19th century; earliest use found in William Odling (1829–1921), chemist. From ortho- + silicate.
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