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h is unclean or unwholesome; mixed or impregnated extraneous substances; adulterated; as, impure water or air; impure drugs, food, etc.

In an impure manner.

The quality or condition of being impure; impurity. Milton.

To corrupt, debase, or make impure by an admixture of a foreign or a baser substance; as, to adulterate food, drink, drugs, coin, etc. The present war has . . . adulterated our tongue with strange words. Spectator.

The alkali produced from the plant, being an impure carbonate of soda, used for making soap, glass, etc., and for bleaching purposes.

Impure limestone. [Prov. Eng.] Wright.

ich it is separated by fractional distillation. The name is sometimes applied also to the impure commercial product or benzole, and also, but rarely, to a similar mixed product of petroleum. Benzene nucleus, Benzene ring (Chem.), a closed chain or ring, consisting of six carbon atoms, each with one hydrogen atom attach…

An impure benzene, used in the arts as a solvent, and for various other purposes. See Benzene.

Caballine aloes. Caballine aloes, an inferior and impure kind of aloes formerly used in veterinary practice; -- called also horse aloes. -- Caballine spring, the fountain of Hippocrene, on Mount Helicon; - - fabled to have been formed by a stroke from the foot of the winged horse Pegasus.

A brown pigment of varying permanence, consisting of impure lignite. It was found originally near Cassel (now Kassel), Germany.

Impure carbon prepared from vegetable or animal substances; esp., coal made by charring wood in a kiln, retort, etc., from which air is excluded. It is used for fuel and in various mechanical, artistic, and chemical processes.

An impure, massive, flintlike quartz or hornstone, of a dull color.

An impure aqueous solution of chloride of aluminium, used as an antiseptic and disinfectant.

xides of cobalt and zinc subjected to the action of fire. -- Hepatic cinnabar (Min.), an impure cinnabar of a liver-brown color and submetallic luster.

A horse, not of pure breed, but having only one eighth or one sixteenth impure blood in his veins. Darwin.

Debauched in character or practice; impure. Milton.

To debase or render impure by alterations or innovations; to falsify; as, to corrupt language; to corrupt the sacred text. He that makes an ill use of it [language], though he does not corrupt the fountains of knowledge, . . . yet he stops the pines. Locke.

To make foul or impure; to make filthy; to dirty; to befoul; to pollute. They that touch pitch will be defiled. Shak.

The act or process of depurating or freeing from foreign or impure matter, as a liquid or wound.

Of, pertaining to, resembling, dross; full of dross; impure; worthless. " Drossy gold." Dryden. "Drossy rhymes." Donne. -- Dross"i*ness, n.