Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of silica is as below...

Talc :: Talc (n.) A soft mineral of a soapy feel and a greenish, whitish, or grayish color, usually occurring in foliated masses. It is hydrous silicate of magnesia. Steatite, or soapstone, is a compact granular variety..

Basilical :: Basilical (a.) Royal; kingly; also, basilican..

Cast Iron :: Cast iron () Highly carbonized iron, the direct product of the blast furnace; -- used for making castings, and for conversion into wrought iron and steel. It can not be welded or forged, is brittle, and sometimes very hard. Besides carbon, it contains sulphur, phosphorus, silica, etc..

Pyrosmalite :: Pyrosmalite (n.) A mineral, usually of a pale brown or of a gray or grayish green color, consisting chiefly of the hydrous silicate of iron and manganese; -- so called from the odor given off before the blowpipe..

Fluosilicate :: Fluosilicate (n.) A double fluoride of silicon and some other (usually basic) element or radical, regarded as a salt of fluosilicic acid; -- called also silicofluoride..

Silex :: Silex (n.) Silica, SiO2 as found in nature, constituting quarz, and most sands and sandstones. See Silica, and Silicic..

Basilica :: Basilica (n.) A building used by the Romans as a place of public meeting, with court rooms, etc., attached..

Protosilicate :: Protosilicate (n.) A silicate formed with the lowest proportion of silicic acid, or having but one atom of silicon in the molecule..

Fibrolite :: Fibrolite (n.) A silicate of alumina, of fibrous or columnar structure. It is like andalusite in composition; -- called also sillimanite, and bucholizite..

Glass :: Glass (v. t.) A hard, brittle, translucent, and commonly transparent substance, white or colored, having a conchoidal fracture, and made by fusing together sand or silica with lime, potash, soda, or lead oxide. It is used for window panes and mirrors, for articles of table and culinary use, for lenses, and various articles of ornament..

Dioptase :: Dioptase (n.) A hydrous silicate of copper, occurring in emerald-green crystals..

Saponite :: Saponite (n.) A hydrous silicate of magnesia and alumina. It occurs in soft, soapy, amorphous masses, filling veins in serpentine and cavities in trap rock..

Silicified :: Silicified (a.) Combined or impregnated with silicon or silica, especially the latter; as, silicified wood..

Hydrofluosilicate :: Hydrofluosilicate (n.) A salt of hydrofluosilic acid; a silicofluoride. See Silicofluoride.

Danburite :: Danburite (n.) A borosilicate of lime, first found at Danbury, Conn. It is near the topaz in form..

Chlorite :: Chlorite (n.) The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia..

Leucite :: Leucite (n.) A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash. It is found in the volcanic rocks of Italy, especially at Vesuvius..

Karpholite :: Karpholite (n.) A fibrous mineral occurring in tufts of a straw-yellow color. It is a hydrous silicate of alumina and manganese.

Wollastonite :: Wollastonite (n.) A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar..

Gadolinite :: Gadolinite (n.) A mineral of a nearly black color and vitreous luster, and consisting principally of the silicates of yttrium, cerium, and iron..

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