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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.]

ertaining 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.

rawn through certain points in experiments on the chromatic effects of polarized light in crystals.

Developed alike in the directions of the several lateral axes; -- said of crystals of both the tetragonal and hexagonal systems.

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.

A small European snipe (Limnocryptes gallinula); -- called also judcock, jedcock, juddock, jed, and half snipe.

An ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.

A bearing for a pivot a pivot in a watch, formed of a crystal or precious stone, as a ruby. Jewel block (Naut.), block at the extremity of a yard, through which the halyard of a studding sail is rove.

olloq.] -- Job's news, bad news. Carlyle. -- Job's tears (Bot.), a kind of grass (Coix Lacryma), with hard, shining, pearly grains.

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

A pale buff or white crystalline alkaloid derived from quinoline, and used as an antipyretic in medicine.

acrimonious; cutting; stinging; severe; as, keen satire or sarcasm. Good father cardinal, cry thou amen To my keen curses. Shak.

To recognize; to descry; to discern. [Archaic or Scot.] "We ken them from afar." Addison 'T is he. I ken the manner of his gait. Shak.