noun, Chemistry.
any of certain amorphous gelatinous masses, formed when alkaline silicates are treated with acids, which dissociate readily into silica and water.
silicic acid
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


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  • Silicide

    noun, Chemistry. 1. a compound of two elements, one of which is silicon. noun 1. any one of a class of binary compounds formed between silicon and certain metals

  • Siliciferous

    [sil-uh-sif-er-uh s] /ˌsɪl əˈsɪf ər əs/ adjective 1. containing, combined with, or producing silica. siliciferous /ˌsɪlɪˈsɪfərəs/ adjective 1. containing or yielding silicon or silica

  • Silicified

    verb (used with or without object), silicified, silicifying. 1. to convert or be converted into silica. verb -fies, -fying, -fied 1. to convert or be converted into silica: silicified wood

  • Silicified-wood

    noun 1. wood that has been changed into quartz by a replacement of the cellular structure of the wood by siliceous waters.

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