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Diorite :: Diorite (n.) An igneous, crystalline in structure, consisting essentially of a triclinic feldspar and hornblende. It includes part of what was called greenstone..

Undecylenic :: Undecylenic (a.) Pertaining to, or designating, an acid C11H20O2, homologous with acrylic acid, and obtained as a white crystalline substance by the distillation of castor oil..

Axinite :: Axinite (n.) A borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges..

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..

Indin :: Indin (n.) A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol..

Barbituric Acid :: Barbituric acid () A white, crystalline substance, CH2(CO.NH)2.CO, derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea..

Chiastolite :: Chiastolite (n.) A variety of andalusite; -- called also macle. The tessellated appearance of a cross section is due to the symmetrical arrangement of impurities in the crystal.

Violuric :: Violuric (a.) Of, pertaining to, or designating, a complex nitroso derivative of barbituric acid. It is obtained as a white or yellow crystalline substance, and forms characteristic yellow, blue, and violet salts..

Vitellin :: Vitellin (n.) An albuminous body, belonging to the class of globulins, obtained from yolk of egg, of which it is the chief proteid constituent, and from the seeds of many plants. From the latter it can be separated in crystalline form..

Violaquercitrin :: Violaquercitrin (n.) A yellow crystalline glucoside obtained from the pansy (Viola tricolor), and decomposing into glucose and quercitrin..

Hesperidin :: Hesperidin (n.) A glucoside found in ripe and unripe fruit (as the orange), and extracted as a white crystalline substance..

Alcoholate :: Alcoholate (n.) A crystallizable compound of a salt with alcohol, in which the latter plays a part analogous to that of water of crystallization..

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

Ecgonine :: Ecgonine (n.) A colorless, crystalline, nitrogenous base, obtained by the decomposition of cocaine..

Violantin :: Violantin (n.) A complex nitrogenous substance, produced as a yellow crystalline substance, and regarded as a complex derivative of barbituric acid..

Meionite :: Meionite (n.) A member of the scapolite, group, occuring in glassy crystals on Monte Somma, near Naples..

Pyroxene :: Pyroxene (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90¡, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basa

Vivianite :: Vivianite (n.) A hydrous phosphate of iron of a blue to green color, growing darker on exposure. It occurs in monoclinic crystals, also fibrous, massive, and earthy..

Muscarin :: Muscarin (n.) A solid crystalline substance, C5H13NO2, found in the toadstool (Agaricus muscarius), and in putrid fish. It is a typical ptomaine, and a violent poison..

Toluid :: Toluid (n.) A complex double tolyl and toluidine derivative of glycocoll, obtained as a white crystalline substance..

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