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A binary compound of fluorine with another element or radical. Calcium fluoride (Min.), fluorite, CaF2. See Fluorite.

A double fluoride of boron and hydrogen, or some other positive element, or radical; -- called also fluoboride, and formerly fluoborate.

A fluosilicate; a salt of silicofluoric acid.

Any one of a series of double fluorides of tin (stannum) and some other element.

A double fluoride of zirconium and hydrogen, or some other positive element or radical; as, zircofluoride of sodium.

A fluoride of sodium and aluminum, found in Greenland, in white cleavable masses; -- used as a source of soda and alumina.

A fluoride. [Obs.]

to, derived from, or consisting of, fluorine and boron. Fluoridic acid (Chem.), a double fluoride, consisting essentially of a solution of boron fluoride, in hydrofluoric acid. It has strong acid properties, and is the type of the borofluorides. Called also borofluoric acid.

See Borofluoride.

A fluoride of cerium, occuring near Fahlun in Sweden. Tynosite, from Colorado, is probably the same mineral.

Combined with fluorine; subjected to the action of fluoride. [R.]

Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.…

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

Composed of, or derived from, silicon and fluorine. Fluosilicic acid, a double fluoride of hydrogen and silicon, H2F6Si, obtained in solution in water as a sour fuming liquid, and regarded as the type of the fluosilicates; -- called also silicofluoric acid, and hydrofluosilicic acid.

l, and now chiefly applied to the chlorides, bromides, iodides, and sometimes also to the fluorides and cyanides. -- n.

A supposed compound of hydrofluoris acid and a base; a fluoride. [Archaic]

A salt of hydrofluosilic acid; a silicofluoride. See Silicofluoride.

Pertaining to, or denoting, a compound consisting of a double fluoride of hydrogen and silicon; silicofluoric. See Silicofluoric.

A fluoride of alumina and soda occurring with the Greenland cryolite in octahedral crystals.

adjectively) denoting the presence of silicon or its compounds; as, silicobenzoic, silicofluoride, etc.