Definition of crystal

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Crystal (n.) The material of quartz, in crystallization transparent or nearly so, and either colorless or slightly tinged with gray, or the like; -- called also rock crystal. Ornamental vessels are made of it. Cf. Smoky quartz, Pebble; also Brazilian pebble, under Brazilian..

Lern More About Crystal

Isometrical :: Isometrical (a.) Noting, or conforming to, that system of crystallization in which the three axes are of equal length and at right angles to each other; monometric; regular; cubic. Cf. Crystallization..
Theobromine :: Theobromine (n.) An alkaloidal ureide, C7H8N4O2, homologous with and resembling caffeine, produced artificially, and also extracted from cacao and chocolate (from Theobroma Cacao) as a bitter white crystalline substance; -- called also dimethyl xanthine..
Sequoiene :: Sequoiene (n.) A hydrocarbon (C13H10) obtained in white fluorescent crystals, in the distillation products of the needles of the California big tree (Sequoia gigantea)..
Aphakia :: Aphakia (n.) An anomalous state of refraction caused by the absence of the crystalline lens, as after operations for cataract. The remedy is the use of powerful convex lenses..
Twin :: Twin (n.) A compound crystal composed of two or more crystals, or parts of crystals, in reversed position with reference to each other..
Hypocrystalline :: Hypocrystalline (a.) Partly crystalline; -- said of rock which consists of crystals imbedded in a glassy ground mass.
Dipyridil :: Dipyridil (n.) A crystalline nitrogenous base, C10H8N2, obtained by the reduction of pyridine..
Ecgonine :: Ecgonine (n.) A colorless, crystalline, nitrogenous base, obtained by the decomposition of cocaine..
Raffinose :: Raffinose (n.) A colorless crystalline slightly sweet substance obtained from the molasses of the sugar beet.
Sorbin :: Sorbin (n.) An unfermentable sugar, isomeric with glucose, found in the ripe berries of the rowan tree, or sorb, and extracted as a sweet white crystalline substance; -- called also mountain-ash sugar..
Torbernite :: Torbernite (n.) A mineral occurring in emerald-green tabular crystals having a micaceous structure. It is a hydrous phosphate of uranium and copper. Called also copper uranite, and chalcolite..
Diabase :: Diabase (n.) A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone..
Dextrose :: Dextrose (n.) A sirupy, or white crystalline, variety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called also starch sugar. It is also formed from starchy food by the action of the amylolytic ferments of saliva and pancreatic juice..
Undecylic :: Undecylic (a.) Related to, derived from, or containing, undecyl; specifically, designating that member of the fatty acids which corresponds to undecane, and is obtained as a white crystalline substance, C11H22O2..
Glycocoll :: Glycocoll (n.) A crystalline, nitrogenous substance, with a sweet taste, formed from hippuric acid by boiling with hydrochloric acid, and present in bile united with cholic acid. It is also formed from gelatin by decomposition with acids. Chemically, it is amido-acetic acid. Called also glycin, and glycocin..
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..
Dolomite :: Dolomite (n.) A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called bitter spar..
Nitratine :: Nitratine (n.) A mineral occurring in transparent crystals, usually of a white, sometimes of a reddish gray, or lemon-yellow, color; native sodium nitrate. It is used in making nitric acid and for manure. Called also soda niter..
Brookite :: Brookite (n.) A mineral consisting of titanic oxide, and hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system..
Glyoxime :: Glyoxime (n.) A white, crystalline, nitrogenous substance, produced by the action of hydroxylamine on glyoxal, and belonging to the class of oximes; also, any one of a group of substances resembling glyoxime proper, and of which it is a type. See Oxime..
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