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Combined or impregnated with silicon or silica, especially the latter; as, silicified wood.

To convert into, or to impregnate with, silica, or with the compounds of silicon. The specimens found . . . are completely silicified. Say.

See Silicon.

Combined or impregnated with silicon. [Obsoles.] Siliciureted hydrogen. (Chem.) Hydrogen silicide. [Obs.]

A combining form (also used adjectively) denoting the presence of silicon or its compounds; as, silicobenzoic, silicofluoride, etc.

Containing, or composed of, silicon and fluorine; especially, denoting the compounds called silicofluorides. Silicofluoric acid (Chem.), a compound of hydrofluoric acid and silicon fluoride, known only in watery solution. It is produced by the action of silicon fluoride on water, and is regarded as an acid, H2SiF6, and…

Of, pertaining to, or designating, any one of a series of double acids of silicon and tungsten, known in the free state, and also in their salts (called silicotungstates).

A form of silicon carbide, produced in the electric furnace, possessing great hardness, and high electrical resistance, and not subject to oxidation below 2880º F., or 1600º C.

H4SiO4; -- so called because the ratio of the oxygen atoms united to the basic metals and silicon respectively is 1:1; for example, Mg2SiO4 or 2MgO.SiO2.

A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.