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Longman Dictionary of Contemporary English
impurity
noun
COLLOCATIONS FROM CORPUS
■ VERB
contain
▪ They often contain toxic impurities and may be an irritant to the skin.
▪ The beans contain an impurity which causes James to become violently ill.
▪ It contains a number of impurities the sum of which are known as water hardness salts.
EXAMPLES FROM OTHER ENTRIES
▪ Lime is added to the liquid metal to remove all the impurities.
▪ There were impurities in the aluminum.
EXAMPLES FROM CORPUS
▪ Ignorance and its sister, doubt, are the essence of all impurities and the source of every mental and spiritual element.
▪ Other sources of a suitable soda-rich mineral with the same specific impurity pattern are difficult to suggest.
▪ The fog, apart from being a mutated organism, now contains carbon dioxide and various other impurities.
▪ They often contain toxic impurities and may be an irritant to the skin.
▪ Thus Ahuja's book is the very first in the literature devoted to the evaluation of impurities in drugs.
▪ With laser techniques, however, the molecular energy levels of the impurities are quite different from the atomic ones.
▪ Workers add chemicals to remove impurities such as sulphides.
The Collaborative International Dictionary
Impurity

Impurity \Im*pu"ri*ty\, n.; pl. Impurities . [L. impuritas: cf. F. impuret['e].]

  1. The condition or quality of being impure in any sense; defilement; foulness; adulteration.

    Profaneness, impurity, or scandal, is not wit.
    --Buckminster.

  2. That which is, or which renders anything, impure; foul matter, action, language, etc.; a foreign ingredient.

    Foul impurities reigned among the monkish clergy.
    --Atterbury.

  3. (Script.) Lack of ceremonial purity; defilement.

Douglas Harper's Etymology Dictionary
impurity

mid-15c., "thing which makes or is impure;" c.1500, "fact or quality of being impure," from Middle French impurité, from impur (see impure). Related: Impurities.

Wiktionary
impurity

n. 1 The condition of being impure; because of contamination, pollution, adulteration or insufficient purification. 2 A component or additive that renders something else impure.

WordNet
impurity
  1. n. worthless material that should be removed; "there were impurities in the water" [syn: dross]

  2. the condition of being impure [syn: impureness] [ant: purity]

Wikipedia
Impurity

Impurities are substances inside a confined amount of liquid, gas, or solid, which differ from the chemical composition of the material or compound.

Impurities are either naturally occurring or added during synthesis of a chemical or commercial product. During production, impurities may be purposely, accidentally, inevitably, or incidentally added into the substance.

The levels of impurities in a material are generally defined in relative terms. Standards have been established by various organizations that attempt to define the permitted levels of various impurities in a manufactured product. Strictly speaking, then a material's level of purity can only be stated as being more or less pure than some other material.

Impurity (New Model Army album)

Impurity is the fifth studio album of British rock band New Model Army, released in September 1990.

It was the first album without bassist Jason Harris, who had been replaced by Peter Nice (better known as "Nelson"). It was also to become the band's last studio album with EMI.

The album sees the band venturing further into the musical territory which they began exploring on their previous album, Thunder and Consolation (1989). Violinist Ed Alleyne-Johnson was again a vital collaborator. It also featured the works of guitarist Adrian Portas.

The album reached #23 on the UK albums chart in October 1990.

Impurity (disambiguation)

An impurity is a substance inside a confined amount of liquid, gas, or solid, which differs from the chemical composition of the material or compound.

Impurity may also refer to:

  • Impurity (Fleshcrawl album), 1994
  • Impurity (New Model Army album), 1990
  • Gini impurity, in decision tree learning
Impurity (Fleshcrawl album)

Impurity is the second studio album by the German death metal band Fleshcrawl. It was their first album to feature guitarist Mike Hanus, brother of founding member Stefan Hanus and last to feature founding bass guitarist Markus Amann, and it is the only Fleshcrawl album thus far that does not bear the "carved-in-flesh" Fleshcrawl logo.1

This album is different from the preceding Descend into the Absurd in that it is somewhat more melodic and musically organized, thus making it closer to the Swedish subgenre of death metal in relation than their earlier releases, which carry a more generic death metal sound. As is typical of their mid-1990s albums, and of mid-1990s Swedish/ Melodic Death metal in general, Impurity is characterized by rapid Bass Drum rolls that alternate with slower, more intense patterns, particularly to counter the mid-to-high tempo guitar riffs. However, the sound of this album is unique among similar bands of the same time in that the drums are toned somewhat higher than usual, resulting in a "tinny" sound not unlike that of many mid-1990s Black metal bands.

The major lyrical themes of this album are consistent with their previous releases, and tend to focus on grim, dark subjects, as is common in death metal, such as evil, death, slavery to dark forces (Subordinate), sacrifice (Center Of Hate), and homicide & genocide (Incineration).

Usage examples of "impurity".

The commonest soluble impurity is calcium sulphate, which produces a whitish scum on the face of the brick in drying, and as the scum becomes permanently fixed in burning, such bricks are of little use except for common work.

One or two grains of the permanganate of potassium will render wholesome a gallon of water containing animal impurities.

Workmen with long-handled wooden paddles stirred the mixture, while others skimmed off the dark, lumpy scum called krausen, a mixture of hop resin, yeast, and impurities that rose to the surface.

The errors caused by these impurities are more marked in the determination of material having small quantities of metal than in that of ores which contain larger quantities.

There were plastic strips that she stuck on and peeled off, grubbing up numerous pluglike impurities from her follicles and pores.

The metal, however, will contain varying proportions of carbon and other impurities, and its weight can only afford a rough knowledge of the proportion of the metal in the ore.

In spite of hundreds of experiments, we do not yet know exactly what these impurities are, though they are doubtless given off from our lungs, our skins, our mouths, and teeth, especially if the latter are not kept clean and sweet, but left dirty and decaying.

What was of nearly equal importance, the age of the pond had prevented any recent accumulation of vegetable matter, and consequently spared those who laboured around the spot, the impurities of atmosphere usually consequent on its decay.

Her physicians thought that they were caused by a disease of the liver, but they came from impurity of the blood, which at last killed her, and from which she suffered throughout her life.

The impurities are small in quantity, yet the metallurgists declare that the evidence is conclusive.

He was an artist, who first softened your face with hot cloths, then covered it with emollient creams, smoothed it, freed it of every impurity, and finally covered the wrinkles with cosmetics, lightly treating the eyes with bistre, making the lips delicately rosy, depilating the ears, to say nothing of what he did to the chin and the head.

The disgrace of medicine has been that colossal system of self-deception, in obedience to which mines have been emptied of their cankering minerals, the vegetable kingdom robbed of all its noxious growths, the entrails of animals taxed for their impurities, the poison-bags of reptiles drained of their venom, and all the inconceivable abominations thus obtained thrust down the throats of human beings suffering from some fault of organization, nourishment, or vital stimulation.

According to the data squirt from Zanthus, that thirty-seven per cent is coming out of the furnace as just so much rubbish, riddled with impurities.

Sophia at Constantinople I got my feet so stuck up with a complication of gums, slime, and general impurity, that I wore out more than two thousand pair of bootjacks getting my books off that night, and even then some Christian hide peeled off with them.

Rice, broomcorn, early wheat mixed with millet, Ribs of fatted ox, tender and succulent, Stewed turtle and roast kid, served with sauce of yams, Geese cooked in sour and bitter, casseroled duck, fried flesh of the great crane, Braised chicken, tortoise seethed in soup of Wu, Fried honey cakes and malt-sugar sweetmeats, And jadelike wine, honey-flavored, fills your cup, Strained of impurities, cool and refreshing.