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Baryto-calcite :: Baryto-calcite (n.) A mineral of a white or gray color, occurring massive or crystallized. It is a compound of the carbonates of barium and calcium..

Narceine :: Narceine (n.) An alkaloid found in small quantities in opium, and extracted as a white crystalline substance of a bitter astringent taste. It is a narcotic. Called also narceia..

Umbelliferone :: Umbelliferone (n.) A tasteless white crystalline substance, C9H6O3, found in the bark of a certain plant (Daphne Mezereum), and also obtained by the distillation of certain gums from the Umbelliferae, as galbanum, asafetida, etc. It is analogous to coumarin. Called also hydroxy-coumarin..

Hydrous :: Hydrous (a.) Containing water of hydration or crystallization.

Dendritical :: Dendritical (a.) Pertaining to a dendrite, or to arborescent crystallization; having a form resembling a shrub or tree; arborescent..

Levorotatory :: Levorotatory (a.) Turning or rotating the plane of polarization towards the left; levogyrate, as levulose, left-handed quartz crystals, etc..

Chrysogen :: Chrysogen (n.) A yellow crystalline substance extracted from crude anthracene.

Murexan :: Murexan (n.) A complex nitrogenous substance obtained from murexide, alloxantin, and other ureids, as a white, or yellowish, crystalline which turns red on exposure to the air; -- called also uramil, dialuramide, and formerly purpuric acid..

Pseudo-symmetry :: Pseudo-symmetry (n.) A kind of symmetry characteristic of certain crystals which from twinning, or other causes, come to resemble forms of a system other than that to which they belong, as the apparently hexagonal prisms of aragonite..

Pebble :: Pebble (n.) Transparent and colorless rock crystal; as, Brazilian pebble; -- so called by opticians..

Enstatite :: Enstatite (n.) A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety..

Linnaeite :: Linnaeite (n.) A mineral of pale steel-gray color and metallic luster, occurring in isometric crystals, and also massive. It is a sulphide of cobalt containing some nickel or copper..

Dialysis :: Dialysis (n.) The separation of different substances in solution, as crystalloids and colloids, by means of their unequal diffusion, especially through natural or artificial membranes..

Lethal :: Lethal (n.) One of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid. It is so called because it occurs in the ethereal salt of lauric acid.

Coumarin :: Coumarin (n.) The concrete essence of the tonka bean, the fruit of Dipterix (formerly Coumarouna) odorata and consisting essentially of coumarin proper, which is a white crystalline substance, C9H6O2, of vanilla-like odor, regarded as an anhydride of coumaric acid, and used in flavoring. Coumarin in also made artificially..

Scoparin :: Scoparin (n.) A yellow gelatinous or crystalline substance found in broom (Cytisus scoparius) accompanying sparteine.

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..

Xylostein :: Xylostein (n.) A glucoside found in the poisonous berries of a species of honeysuckle (Lonicera xylosteum), and extracted as a bitter, white, crystalline substance..

Dichroic :: Dichroic (a.) Having the property of dichroism; as, a dichroic crystal..

Terpin :: Terpin (n.) A white crystalline substance regarded as a hydrate of oil of turpentine.

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