• WordNet 3.6
    • adj impure having a physical or moral blemish so as to make impure according to dietary or ceremonial laws "unclean meat","and the unclean to you"-Leviticus 11:3"
    • adj impure (used of persons or behaviors) immoral or obscene "impure thoughts"
    • adj impure combined with extraneous elements
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Colored diamonds are caused by impurities such as nitrogen (yellow), boron (blue). With red diamonds being due to deformities in the structure of the stone, and green ones being the result of irradiation.
    • Impure Defiled by sin or guilt; unholy; unhallowed; -- said of persons or things.
    • Impure (Language) Not accurate; not idiomatic; as, impure Latin; an impure style.
    • Impure Not pure; not clean; dirty; foul; filthy; containing something which is unclean or unwholesome; mixed or impregnated extraneous substances; adulterated; as, impure water or air; impure drugs, food, etc.
    • Impure (Script) Not purified according to the ceremonial law of Moses; unclean.
    • v. t Impure To defile; to pollute.
    • Impure Unchaste; lewd; unclean; obscene; as, impure language or ideas. "Impure desires."
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
    • impure Not pure physically; mixed or impregnated with extraneous, and especially with offensive, matter; foul; feculent; tainted: as, impure water or air; impure salt or magnesia.
    • impure Not simple or unmixed; mixed or combined with something else: said of immaterial things.
    • impure Not pure morally; unchaste; obscene; lewd: as, impure language or ideas; impure actions.
    • impure Of a contaminating nature; causing defilement, physical or moral; unclean; abominable.
    • impure Not in conformity with a standard of correctness, simplicity, etc.: as, an impure style of writing.
    • impure To make impure; defile.
    • impure To grow impure.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Impure im-pūr′ mixed with other substances: defiled by sin: unholy: unchaste: unclean
    • ***


  • Ralph Waldo Emerson
    “Gross and obscure natures, however decorated, seem impure shambles; but character gives splendor to youth, and awe to wrinkled skin and gray hairs.”
  • Rainer Maria Rilke
    “All emotions are pure which gather you and lift you up; that emotion is impure which seizes only one side of your being and so distorts you.”
  • Dan Quayle
    “It isn't pollution that's harming the environment. It's the impurities in our air and water that are doing it.”
  • Wyndham Lewis
    “All orthodox opinion -- that is, today, revolutionary opinion either of the pure or the impure variety -- is anti-man.”
  • Jean Rostand
    “We are not na?ve enough to ask for pure men; we ask merely for men whose impurity does not conflict with the obligations of their job.”
  • George Bernard Shaw
    “When Satan makes impure verses, Allah sends a divine tune to cleanse them.”


Webster's Revised Unabridged Dictionary
L. impurus,; pref. im-, not + purus, pure: cf. F. impur,. See Pure


In literature:

There are two brotherhoods among men, that of purity and that of impurity.
"Serbia in Light and Darkness" by Nikolaj Velimirovic
Impure thoughts and unchaste acts are alike violations of the seventh commandment.
"Plain Facts for Old and Young" by John Harvey Kellogg
I had to put those impure, immoral questions to old and young females who were confessing their sins to me.
"The Priest, The Woman And The Confessional" by Father Chiniquy
Now, if these pores are stopped up they are of no use, and the body has to find some other way to get rid of its impurities.
"The Handy Cyclopedia of Things Worth Knowing" by Joseph Triemens
CAUSE: It may be the result of debility, constitutional diseases, inhalation of impure air, smoke, or gases.
"The Veterinarian" by Chas. J. Korinek
Phosphorus is one of the impurities in steel, and it has been the object of steel makers for years to eliminate it.
"The Working of Steel" by Fred H. Colvin
For no land is impure of itself.
"The Tribes and Castes of the Central Provinces of India--Volume I (of IV)" by R.V. Russell
This is because they have become impure.
"The Tribes and Castes of the Central Provinces of India - Volume IV of IV" by R.V. Russell
An impure young woman is an awful sight.
"Aims and Aids for Girls and Young Women" by George Sumner Weaver
Such water is practically pure, since the impurities are nonvolatile and remain in the flask A.
"An Elementary Study of Chemistry" by William McPherson
The impurities consist mainly of moisture and mineral matter.
"Human Foods and Their Nutritive Value" by Harry Snyder
What a tax human beings pay for breathing impure air!
"Pushing to the Front" by Orison Swett Marden
Pasteurization does not remove chemical impurities; boiling dirt does not render it harmless.
"Civics and Health" by William H. Allen
Good nature is one of the virtues of impurity.
"The Bishop of Cottontown" by John Trotwood Moore
All the alkali and impurities will settle to the bottom of the bottle, leaving the liquid as clear as crystal.
"The Woman Beautiful" by Helen Follett Stevans
The Oriental goddess of impure love was parthenos.
"Folkways" by William Graham Sumner
Not that love in itself is impure, but too often it is mere pretense.
"Epistle Sermons, Vol. II" by Martin Luther
She felt like bright metal weighted down by dark, impure magnetism.
"The Rainbow" by D. H. (David Herbert) Lawrence
Any of these elements lacking, and the life is wanting, defective, impure.
"The Book of Khalid" by Ameen Rihani
Impurity of surface water-supply, 140.
"Rural Hygiene" by Henry N. Ogden

In poetry:

Dreadfully staring
Thro' muddy impurity,
As when with the daring
Last look of despairing
Fix'd on futurity.
"The Bridge of Sighs" by Thomas Hood
Remembering ills, though slight
Yet irremediable,
Brings a worse, an impurer pang
Than remembering what was well.
"Home 1" by Edward Thomas
Flesh may not hear it,
Being impure;
And mind may fear it,
May not endure;
But in the spirit--
There we are sure.
"One Day And Another: A Lyrical Eclogue – Part IV" by Madison Julius Cawein
Heavy her ire will fall on thee,
The glittering steel is sure;
Sooner or later, all agree,
She cuts off the impure.
"The Viceroy. A Ballad." by Matthew Prior
Impure, though they may plunge
Into the morning's springs,
And spirit-dulled, though they
Command the heaven's heights.
"Vultures" by Padraic Colum
Shall he that keeps his promise sure
In things both low and small,
Yet break it like a man impure,
In matters great'st of all?
"An Introduction To The Ensuing Discourse." by John Bunyan

In news:

This test method has been found applicable to the measurement of impurities found in cyclohexane .
Grain Boundary Decohesion by Impurity Segregation in a Nickel-Sulfur System Masatake Yamaguchi, Motoyuki Shiga, Hideo Kaburaki.
The determination of residual solvents (RS), formerly called organic volatile impurities (OVI), in pharmaceutical products is probably the most important application of gas chromatography in pharmaceutical quality control.
The US Pharmacopeia's revised General Chapters on elemental impurity limits and testing procedures are set to take effect in December 2012, and are to be implemented by the industry by May 2014.
USP optimizes identification tests and impurities procedures.
Norquist himself dismissed the defectors' "impure thoughts.".
Can Communism in the course of time, with sufficient dilution and added impurity, catch the multitude.
Test Method Ca 5a-40 Ca 3a-46 Ca 2c-25 or Ca 2b-38 Cc 8d-55 Cc 12-59 Ca 6a-40 Determination Free Fatty Acids Insoluble Impurities Moisture.
The recent outbreak of a potentially fatal disease linked to L-tryptophan probably came from an impurity introduced by a change in how the dietary supplement was made, scientists say.
Impurity Linked To Adverse Events.
At Evergreen Forest Products, new scanners will read rough-cut timber, showing mill workers how to get around impurities such as knots.
POMPANO BEACH, Fla. TCCD International has announced the introduction of its Geodeo Natural Deodorant Plus that works to help remove daily buildup of toxins and impurities with a Detox Complex.
TCCD International (marketers of the Naturally Fresh Deodorant Crystal) is introducing an improved GeoDeo Natural Deodorant Plus ($5.99) that helps remove daily buildup of toxins and impurities with Detox Complex, according to thecompany.
Volcanic minerals and Icelandic algae work to help fight impurities.
A Culligan reverse osmosis drinking water system uses a series of filters to reduce many microscopic impurities and chemical elements that may be in your water.

In science:

Dirichlet Impurity: Let us now consider the simple case that the closed string BMN operator has Z ′ and a Dirichlet impurity D.
Open+Closed String Field Theory From Gauge Fields
Ouvry, Random magnetic impurities and the δ impurity problem, J.
Functionals of the Brownian motion, localization and metric graphs
Starting from a given choice of the Weiss field, the impurity Green’s function has to be computed with some “impurity solver”.
Solving Dynamical Mean-Field Theory at very low temperature using Lanczos Exact Diagonalization
X being the location of the impurities and −u(x − ζ ) ≤ 0 the attractive potential created by the impurity placed at ζ .
Localization at low energies for attractive Poisson random Schr\"odinger operators
Since the impurities are randomly distributed, it is natural to model the configurations of the impurities by a Poisson process on Rd [LiGP, PF].
Localization at low energies for attractive Poisson random Schr\"odinger operators
In many situations the typical time scale of the thermal fluctuations in the idealized “pure” systems is clearly separated from the time scale of the impurity dynamics, such that to a very good approximation the impurities can be treated as quenched.
Critical behavior of the spin-3/2 Blume-Capel model on a random two-dimensional lattice
As shown in Ref. 18, dilute impurities in an interacting quasi-1D conductor can stabilize a “bounded” Luttinger liquid on ballistic finite size segments in between two impurities that constitute infinite barriers at low energy19 .
Strongly disordered Hubbard model in one dimension: spin and orbital infinite randomness and Griffiths phases
Another interesting case may be a classical ferromagnet with antiferomagnetic (AFM) site impurities; a finite applied magnetic field will have reversed sign on those impurity spins leading to random component of field .
Direct evidence of random field effect on magnetic ordering of La_(0.5)Gd_(0.2)Sr_(0.3)MnO_(3) manganite system
Each segment is pinned by one strong impurity such that the pinning potential per length acting by strong impurities is ((cid:104)li (cid:105) /li ) sin φ.
The analysis on the single particle model of CDW
The basic impurities are ( ¯φ, ψα , ¯ψα , Dµ ), forming a long multiplet of SU (1|2) (unlike the N = 3 case, where such impurities are bound states of more elementary impurities).
Notes on Superconformal Chern-Simons-Matter Theories
We call such vertices impure and a lower bound on the component of Gp is given by the component of Tp after removing all impure vertices (and their descendants).
Mean-field conditions for percolation on finite graphs
The next important observation is that in some rough sense, the unique path in T between an impure vertex and the vertex causing it to be impure (i.e., the vertex with the same label discovered previously) is a random path in T due to the nature of the BFS exploration process.
Mean-field conditions for percolation on finite graphs
Indeed, it may happen that w is impure because of some vertex u, but u is impure itself (or the path between u to u ∧ w is not a pure path), and in this case we may see L(w) in the exploration process on G, but not count it in X A r .
Mean-field conditions for percolation on finite graphs
In the random magnetic impurity model , a crucial role is played by the joint probability distribution of the random variables S = (2/t) Pn Sn sin2 (παn) and A = (1/t) Pn Sn sin(2παn), where α is the Aharonov-Bohm flux (in unit of the quantum of flux) carried by the magnetic impurities.
Numerical studies of planar closed random walks
There exists a sequence of t-moves which transforms an impurity e to another impurity e′ ∈ E2 if and only if e and e′ intersects with a common slit-curve.
Domino tilings with diagonal impurities