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A crystalline nitrogenous base, C10H8N2, obtained by the reduction of pyridine.

ed rays, arising from their different refrangibilities. Dispersion of the optic axes (Crystallog.), the separation of the optic axes in biaxial crystals, due to the fact that the axial angle has different values for the different colors of the spectrum.

Toward a distal part; on the distal side of; distally.

To force or put out of the true posture or direction; to twist aside mentally or morally. Wrath and malice, envy and revenge, do darken and distort the understandings of men. Tillotson.

Mentally disordered; unsettled; mad. My distracted mind. Pope.

A white, crystalline, aromatic hydrocarbon, C14H14, consisting of two radicals or residues of toluene.

tten down. -- Short division (Math.), the process of division when the operations are mentally performed and only the results written down; -- used principally when the divisor is not greater than ten or twelve.

Proving by experiments or tests. Docimastic art, metallurgy, or the art of assaying metals; the art of separating metals from foreign matters, and determining the nature and quantity of metallic substances contained in any ore or mineral.

. 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.

dress a horse, by currying and rubbing; to dress grain, by cleansing it; in mining and metallurgy, to dress ores, by sorting and separating them.

To dig Horizontally; to cut a horizontal gallery or tunnel. Tomlinson.

end of which is stretched a piece of skin or vellum, to be beaten with a stick; or of a metallic hemisphere (kettledrum) with a single piece of skin to be so beaten; the common instrument for marking time in martial music; one of the pair of tympani in an orchestra, or cavalry band. The drums cry bud-a-dub. Gascoigne.…

A dressing of flour and water used by weavers; a mixture of oil and tallow for dressing leather; daubing.

An instrument, having stretched metallic wires which are beaten with two light hammers held in the hands of the performer.

A colorless, crystalline, aromatic hydrocarbon, C6H2(CH3)4, off artificial production, with an odor like camphor.

tial intoxication. [Slang] Marryat. -- Dutch door, a door divided into two parts, horizontally, so arranged that the lower part can be shut and fastened, while the upper part remains open. -- Dutch foil, Dutch leaf, or Dutch gold, a kind of brass rich in copper, rolled or beaten into thin sheets, used in Holland to o…

Any earthy-looking metallic oxide, as alumina, glucina, zirconia, yttria, and thoria.

A colorless, crystalline, nitrogenous base, obtained by the decomposition of cocaine.

Out of place; congenitally displaced; as, an ectopic organ.

To change on the surface, or throughout, to a whitish, mealy, or crystalline powder, from a gradual decomposition, esp. from the loss of water, on simple exposure to the air; as, Glauber's salts, and many others, effloresce.