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Leucophane :: Leucophane (n.) A mineral of a greenish yellow color; it is a silicate of glucina, lime, and soda with fluorine. Called also leucophanite..

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

Halogen :: Halogen (n.) An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine..

Epipolized :: Epipolized (a.) Changed to the epipolic condition, or that in which the phenomenon of fluorescence is presented; produced by fluorescence; as, epipolized light..

Fluorescent :: Fluorescent (a.) Having the property of fluorescence.

Fluorous :: Fluorous (a.) Pertaining to fluor.

Spar :: Spar (n.) An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in the case of the gangue minerals of a metalliferous vein..

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

Kand :: Kand (n.) Fluor spar; -- so called by Cornish miners.

Fluo- :: Fluo- () A combining form indicating fluorine as an ingredient; as in fluosilicate, fluobenzene..

Blue-john :: Blue-john (n.) A name given to fluor spar in Derbyshire, where it is used for ornamental purposes..

Hydracid :: Hydracid (n.) An acid containing hydrogen; -- sometimes applied to distinguish acids like hydrochloric, hydrofluoric, and the like, which contain no oxygen, from the oxygen acids or oxacids. See Acid..

Humite :: Humite (n.) A mineral of a transparent vitreous brown color, found in the ejected masses of Vesuvius. It is a silicate of iron and magnesia, containing fluorine..

Resorcin :: Resorcin (n.) A colorless crystalline substance of the phenol series, obtained by melting certain resins, as galbanum, asafetida, etc., with caustic potash. It is also produced artificially and used in making certain dyestuffs, as phthalein, fluorescein, and eosin..

Fluoric :: Fluoric (a.) Pertaining to, obtained from, or containing, fluorine..

Epipolism :: Epipolism (n.) See Fluorescence.

Radiograph :: Radiograph (n.) A picture produced by the Rontgen rays upon a sensitive surface, photographic or fluorescent, especially a picture of opaque objects traversed by the rays..

Chrysene :: Chrysene (n.) One of the higher aromatic hydrocarbons of coal tar, allied to naphthalene and anthracene. It is a white crystalline substance, C18H12, of strong blue fluorescence, but generally colored yellow by impurities..

Fluorine :: Fluorine (n.) A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. If set free it immediately attacks the containing material, so that it was not isolated until 1886. It is a pungent, corrosive, colorles

Fluorated :: Fluorated (a.) Combined with fluorine; subjected to the action of fluoride.

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