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The most common and most useful metallic element, being of almost universal occurrence, usually in the form of an oxide (as hematite, magnetite, etc.), or a hydrous oxide (as limonite, turgite, etc.). It is reduced on an enormous scale in three principal forms; viz., cast iron, steel, and wrought iron. Iron usually app…

A tall weed with purplish flowers (Vernonia Noveboracensis). The name is also applied to other plants of the same genus.

A white crystalline substance obtained by the partial reduction of isatin. [Written also isatyde.]

An orange-red crystalline substance, C8H5NO2, obtained by the oxidation of indigo blue. It is also produced from certain derivatives of benzoic acid, and is one important source of artificial indigo. [Written also, less properly, isatine.]

ining to, derived from, or designating, an acid, HO.C2H4.SO3H, obtained as an oily or crystalline substance, by the action of sulphur trioxide on alcohol or ether. It is derivative of sulphuric acid.

A white, crystalline, sugarlike substance, obtained by the decomposition of certain glucosides, and intermediate in nature between the hexacid alcohols (ductile, mannite, etc.) and the glucoses.

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. Isometric lines (Thermodynamics), lines representing in a diagram the relations of pressure and temperature in a gas, when the volume r…

A substance which is similar to another in crystalline form and composition.

A similarity of crystalline form between substances of similar composition, as between the sulphates of barium (BaSO4) and strontium (SrSO4). It is sometimes extended to include similarity of form between substances of unlike composition, which is more properly called homoeomorphism.

A crystalline, nitrogenous base, C10H14N2, isomeric with nicotine.

A crystalline hydrocarbon derivative, metameric with orcin, but produced artificially; -- called also cresorcin.

An artificial nitrogenous base, isomeric with urea, and forming a white crystalline substance; -- called also isuretine.

Pertaining to, or designating, an acid, C5H6O4, which is obtained as a white crystalline substance by decomposing aconitic and other organic acids.

An arrangement of lace or tulle, looped ornamentally, and worn by women on the front of the dress.

A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.

To cause to give a sharp metallic sound as a little bell, or as coins shaken together; to tinkle. The bells she jingled, and the whistle blew. Pope.

A tall composite plant of the genus Eupatorium (E. purpureum), with purplish flowers, and whorled leaves.

A tall perennial grass (Sorghum Halepense), valuable in the Southern and Western States for pasture and hay. The rootstocks are large and juicy and are eagerly sought by swine. Called also Cuba grass, Means grass, Evergreen millet, and Arabian millet.

A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed; -- called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming joist, etc. See Illust. of Double-framed floor, under Double, a.…

A yellow crystalline substance resembling quinone, extracted from green shucks of the walnut (Juglans regia); -- called also nucin.