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Hematite :: Hematite (n.) An important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in splendent rhombohedral crystals, and in massive and earthy forms; -- the last called red ocher. Called also specular iron, oligist iron, rhombohedral iron ore, and bloodstone. See Brown hematite, under Brown..

Primum Mobile :: Primum mobile () In the Ptolemaic system, the outermost of the revolving concentric spheres constituting the universe, the motion of which was supposed to carry with it all the inclosed spheres with their planets in a daily revolution from east to west. See Crystalline heavens, under Crystalline..

Styryl :: Styrone (n.) A white crystalline substance having a sweet taste and a hyacinthlike odor, obtained by the decomposition of styracin; -- properly called cinnamic, / styryl, alcohol..

Gentiopikrin :: Gentiopikrin (n.) A bitter, yellow, crystalline substance, regarded as a glucoside, and obtained from the gentian..

Frangulin :: Frangulin (n.) A yellow crystalline dyestuff, regarded as a glucoside, extracted from a species (Rhamnus Frangula) of the buckthorn; -- called also rhamnoxanthin..

Molasses :: Molasses (n.) The thick, brown or dark colored, viscid, uncrystallizable sirup which drains from sugar, in the process of manufacture; any thick, viscid, sweet sirup made from vegetable juice or sap, as of the sorghum or maple. See Treacle..

Uvitonic :: Uvitonic (a.) Pertaining to, or designating, an acid which is obtained as a white crystalline substance by the action of ammonia on pyrotartaric acid..

Enstatite :: Enstatite (n.) A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety..

Pebble :: Pebble (n.) Transparent and colorless rock crystal; as, Brazilian pebble; -- so called by opticians..

Phorone :: Phorone (n.) A yellow crystalline substance, having a geraniumlike odor, regarded as a complex derivative of acetone, and obtained from certain camphor compounds..

Brochantite :: Brochantite (n.) A basic sulphate of copper, occurring in emerald-green crystals..

Purpurin :: Purpurin (n.) A dyestuff resembling alizarin, found in madder root, and extracted as an orange or red crystalline substance..

Thionine :: Thionine (n.) An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet..

Platinocyanic :: Platinocyanic (a.) Pertaining to, derived from, or designating, an acid compound of platinous cyanide and hydrocyanic acid. It is obtained as a cinnaber-red crystalline substance..

Hyaline :: Hyaline (a.) Glassy; resembling glass; consisting of glass; transparent, like crystal..

Caffeine :: Caffeine (n.) A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana..

Glaucophane :: Glaucophane (n.) A mineral of a dark bluish color, related to amphibole. It is characteristic of certain crystalline rocks..

Mannitan :: Mannitan (n.) A white amorphous or crystalline substance obtained by the partial dehydration of mannite.

Chrysoidine :: Chrysoidine (n.) An artificial, yellow, crystalline dye, C6H5N2.C6H3(NH2)2. Also, one of a group of dyestuffs resembling chrysoidine proper..

Desmine :: Desmine (n.) Same as Stilbite. It commonly occurs in bundles or tufts of crystals.

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