Definition of crystal

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Crystal (n.) A species of glass, more perfect in its composition and manufacture than common glass, and often cut into ornamental forms. See Flint glass..

Lern More About Crystal

Brushite :: Brushite (n.) A white or gray crystalline mineral consisting of the acid phosphate of calcium.
Cleavage :: Cleavage (n.) The quality possessed by many crystallized substances of splitting readily in one or more definite directions, in which the cohesive attraction is a minimum, affording more or less smooth surfaces; the direction of the dividing plane; a fragment obtained by cleaving, as of a diamond. See Parting..
Quinicine :: Quinicine (n.) An uncrystallizable alkaloid obtained by the action of heat from quinine, with which it is isomeric..
Amorphous :: Amorphous (a.) Without crystallization in the ultimate texture of a solid substance; uncrystallized.
Cronstedtite :: Cronstedtite (n.) A mineral consisting principally of silicate of iron, and crystallizing in hexagonal prisms with perfect basal cleavage; -- so named from the Swedish mineralogist Cronstedt..
Chalcopyrite :: Chalcopyrite (n.) Copper pyrites, or yellow copper ore; a common ore of copper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a bright brass yellow color..
Presbyopia :: Presbyopia () A defect of vision consequent upon advancing age. It is due to rigidity of the crystalline lens, which produces difficulty of accommodation and recession of the near point of vision, so that objects very near the eyes can not be seen distinctly without the use of convex glasses. Called also presbytia..
Dichroscope :: Dichroscope (n.) An instrument for examining the dichroism of crystals.
Vanillin :: Vanillin (n.) A white crystalline aldehyde having a burning taste and characteristic odor of vanilla. It is extracted from vanilla pods, and is also obtained by the decomposition of coniferin, and by the oxidation of eugenol..
Geniculate :: Geniculate (a.) Bent abruptly at an angle, like the knee when bent; as, a geniculate stem; a geniculate ganglion; a geniculate twin crystal..
Hydroquinone :: Hydroquinone (n.) A white crystalline substance, C6H4(OH)2, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Called also dihydroxy benzene..
Lanthopine :: Lanthopine (n.) An alkaloid found in opium in small quantities, and extracted as a white crystalline substance..
Crystalline :: Crystalline (a.) Imperfectly crystallized; as, granite is only crystalline, while quartz crystal is perfectly crystallized..
Etherin :: Etherin (n.) A white, crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether; -- formerly called also concrete oil of wine..
Mandelic :: Mandelic (a.) Pertaining to an acid first obtained from benzoic aldehyde (oil of better almonds), as a white crystalline substance; -- called also phenyl glycolic acid..
Bay Salt :: Bay salt () Salt which has been obtained from sea water, by evaporation in shallow pits or basins, by the heat of the sun; the large crystalline salt of commerce..
Fluorene :: Fluorene (n.) A colorless, crystalline hydrocarbon, C13H10 having a beautiful violet fluorescence; whence its name. It occurs in the higher boiling products of coal tar, and is obtained artificially..
Pyrargyrite :: Pyrargyrite (n.) Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster..
Cubical :: Cubical (a.) Isometric or monometric; as, cubic cleavage. See Crystallization..
Asterism :: Asterism (n.) An optical property of some crystals which exhibit a star-shaped by reflected light, as star sapphire, or by transmitted light, as some mica..
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