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Acicula :: Acicula (n.) One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal..

Phlorone :: Phlorone (n.) A yellow crystalline substance having a peculiar unpleasant odor, resembling the quinones, and obtained from beechwood tar and coal tar, as also by the oxidation of xylidine; -- called also xyloquinone..

Strontic :: Strontianite (n.) Strontium carbonate, a mineral of a white, greenish, or yellowish color, usually occurring in fibrous massive forms, but sometimes in prismatic crystals..

Libethenite :: Libethenite (n.) A mineral of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper..

Isatide :: Isatide (n.) A white crystalline substance obtained by the partial reduction of isatin.

Lophine :: Lophine (n.) A nitrogenous organic base obtained by the oxidation of amarine, and regarded as a derivative of benzoic aldehyde. It is obtained in long white crystalline tufts, -- whence its name..

Macrodiagonal :: Macrodiagonal (n.) The longer of two diagonals, as of a rhombic prism. See Crystallization..

Candy :: Candy (v. i.) To have sugar crystals form in or on; as, fruits preserved in sugar candy after a time..

Allomerism :: Allomerism (n.) Variability in chemical constitution without variation in crystalline form.

Physostigmine :: Physostigmine (n.) An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical..

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..

Sapogenin :: Sapogenin (n.) A white crystalline substance obtained by the decomposition of saponin.

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.

Curcumin :: Curcumin (n.) The coloring principle of turmeric, or curcuma root, extracted as an orange yellow crystalline substance, C14H14O4, with a green fluorescence..

Trona :: Trona (n.) A native double salt, consisting of a combination of neutral and acid sodium carbonate, Na2CO3.2HNaCO3.2H2O, occurring as a white crystalline fibrous deposit from certain soda brine springs and lakes; -- called also urao, and by the ancients nitrum..

Belonite :: Belonite (n.) Minute acicular or dendritic crystalline forms sometimes observed in glassy volcanic rocks.

Crystallographically :: Crystallographically (adv.) In the manner of crystallography.

Metamorphic :: Metamorphic (a.) Pertaining to, produced by, or exhibiting, certain changes which minerals or rocks may have undergone since their original deposition; -- especially applied to the recrystallization which sedimentary rocks have undergone through the influence of heat and pressure, after which they are called metamorphic rocks..

Santalic :: Santalic (a.) Of, pertaining to, or obtained from, sandalwood (Santalum); -- used specifically to designate an acid obtained as a resinous or red crystalline dyestuff, which is called also santalin..

Flint Glass :: Flint glass () A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; -- so called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass..

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