- a white gelatinous substance obtained by adding an acid to a solution of sodium silicate. It has an ill-defined composition and is best regarded as hydrated silica, SiO2.nH2O
WordReference Random House Unabridged Dictionary of American English © 2026
silic′ic ac′id, [Chem.]
- Chemistryany of certain amorphous gelatinous masses, formed when alkaline silicates are treated with acids, which dissociate readily into silica and water.
- 1810–20
Collins Concise English Dictionary © HarperCollins Publishers::
silicic acid n
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