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Enargite :: Enargite (n.) An iron-black mineral of metallic luster, occurring in small orthorhombic crystals, also massive. It contains sulphur, arsenic, copper, and often silver..

Bipyramidal :: Bipyramidal (a.) Consisting of two pyramids placed base to base; having a pyramid at each of the extremities of a prism, as in quartz crystals..

Dimorphism :: Dimorphism (n.) Crystallization in two independent forms of the same chemical compound, as of calcium carbonate as calcite and aragonite..

Levulose :: Levulose (n.) A sirupy variety of sugar, rarely obtained crystallized, occurring widely in honey, ripe fruits, etc., and hence called also fruit sugar. It is called levulose, because it rotates the plane of polarization to the left..

Dioxindol :: Dioxindol (n.) A white, crystalline, nitrogenous substance obtained by the reduction of isatin. It is a member of the indol series; -- hence its name..

Salicylide :: Salicylide (n.) A white crystalline substance obtained by dehydration of salicylic acid.

Incrystallizable :: Incrystallizable (a.) Not crystallizable; incapable of being formed into crystals.

Roselite :: Roselite (n.) A hydrous arsenite of cobalt, occuring in small red crystals, allied to erythrite..

Phthalide :: Phthalide (n.) A lactone obtained by reduction of phthalyl chloride, as a white crystalline substance; hence, by extension, any one of the series of which phthalide proper is the type..

Erythrophleine :: Erythrophleine (n.) A white crystalline alkaloid, extracted from sassy bark (Erythrophleum Guineense)..

Cancrinite :: Cancrinite (n.) A mineral occurring in hexagonal crystals, also massive, generally of a yellow color, containing silica, alumina, lime, soda, and carbon dioxide..

Quinicine :: Quinicine (n.) An uncrystallizable alkaloid obtained by the action of heat from quinine, with which it is isomeric..

Syringocoele :: Syringin (n.) A glucoside found in the bark of the lilac (Syringa) and extracted as a white crystalline substance; -- formerly called also lilacin.

Boracite :: Boracite (n.) A mineral of a white or gray color occurring massive and in isometric crystals; in composition it is a magnesium borate with magnesium chloride.

Cystine :: Cystine (n.) A white crystalline substance, C3H7NSO2, containing sulphur, occuring as a constituent of certain rare urinary calculi, and occasionally found as a sediment in urine..

Platinichloric :: Platinichloric (a.) Of, pertaining to, or designating, an acid consisting of platinic chloride and hydrochloric acid, and obtained as a brownish red crystalline substance, called platinichloric, or chloroplatinic, acid..

Pinacone :: Pinacone (n.) A white crystalline substance related to the glycols, and made from acetone; hence, by extension, any one of a series of substances of which pinacone proper is the type..

Biotite :: Biotite (n.) Mica containing iron and magnesia, generally of a black or dark green color; -- a common constituent of crystalline rocks. See Mica..

Enantiomorphous :: Enantiomorphous (a.) Similar, but not superposable, i. e., related to each other as a right-handed to a left-handed glove; -- said of certain hemihedral crystals..

Isochromatic :: Isochromatic (a.) Having the same color; connecting parts having the same color, as lines drawn through certain points in experiments on the chromatic effects of polarized light in crystals..

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