• Webster's Revised Unabridged Dictionary
    • n Impuration Defilement; obscuration.
    • ***
Century Dictionary and Cyclopedia
  • 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.
    • n impuration The act of making impure.
    • ***


  • 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.”


In literature:

A cold must be regarded as an effort of Nature to get rid of these impurities.
"Papers on Health" by John Kirk
Sexual impurity finds its nest amid the darkness and ill-endowed children swarm in the streets.
"Society" by Henry Kalloch Rowe
The chief aim of the refiner is to remove these impurities without saponifying any of the neutral oil.
"The Handbook of Soap Manufacture" by W. H. Simmons
Licentious and Impure Books to be banished.
"A Treatise on Domestic Economy" by Catherine Esther Beecher
They were all impure, polluted by a natural stench which it was impossible for them to wipe out.
"Luna Benamor" by Vicente Blasco Ibáñez
These events cause impurity and hence all the clothes of all the members of the family must be washed when the impurity ceases.
"The Tribes and Castes of the Central Provinces of India" by R. V. Russell
If the impure heart is not suppressed it is useless to suppress the impure object, while if the heart is renewed the whole task is achieved.
"The Task of Social Hygiene" by Havelock Ellis
The impure and selfish soul, is hereby purified, as gold in the furnace.
"The Autobiography of Madame Guyon" by Jeanne Marie Bouvier de La Motte Guyon
The coffee passes through a first ventilator, which frees it from impurities such as earth, stems, stones, filaments, etc.
"Across Unknown South America" by Arnold Henry Savage Landor
Shaly, compact, impure limestone, with shale and marl, embracing two ranges of plaster beds with hopper-shaped cavities between.
"Old Mackinaw" by W. P. Strickland

In poetry:

O miserable he who sings
Some strain impure, whose numbers fall
Along the cruel wind that brings
Death to some child beneath his wall.
"Charity" by Victor Marie Hugo
But Purgatory, thine old abode
Since Life's impure delay,
Towers athwart the circling air
Whose topmost Heaven-reaching stair
Thou dost tread to-day.
"The Anchoret" by Thomas MacDonagh
May God keep us all, from Satan's sad thrall,
(I pray from the depth of my soul!)
And Christians secure, from vices impure,
And hell and the tempter controul.
"A Song Concerning The Devil And The Drunkard" by Rees Prichard
I feel, and I feel it with deep melancholy,
Impure is the passion I cherish for thee;
My lover, oh! speak, is my flame not unholy?
O! speak, and thy voice shall be conscience to me.
"The Doubt" by Charlotte Dacre
Else--in him inhering powers of intellection--
Death, by interfering with his mind's perfection,
Itself gives security to restore life's treasure,
Freed from all impurity and in endless measure.
"A Pagan Reverie" by Frances Fuller Victor
Beware! for when once ye have made your Red Ocean,
Its waves shall rise up with tempestuous swell,
And hurl your stained souls, like impurities, from them
Up death's dark slope, to the skull beach of Hell!
"Pro Patria: America, 1861" by Adah Isaacs Menken

In news:

Rain Cleanses the Impurity of Jews in Jerusalem so Muslims Can Pray.
It also provides a procedure to measure impurities.
This test method has been found applicable to the measurement of impurities found in cyclohexane.
The GOP's " Impure Thoughts" Edition.
You don't hear anything about impure thoughts these days, but I spent all the waking hours of my teenage years trying not to have them.
We need more of Kantrowitz's ' impure research.
Smokes, boats and impure thoughts.
Académie Solemnly Mans the Barricades Against Impure French.
Impurity Linked To Adverse Events.
First, fire the chemist who suggested using oil to remove impurities .
East Hampton April 4, 2011 To the Editor, Years ago in my father's effort to educate his simple son, he advised me that life was not black and white, pure and impure.
The rubber is melted, cleaned of impurities and particulates, and then given a new life as a sink.
Norquist himself dismissed the defectors' "impure thoughts.".
Volcanic minerals and Icelandic algae work to help fight impurities.
Iowa DNR to test groundwater across state for impurities.

In science:

In principle these quantities do depend on the particular distribution of all impurities (i.e. distribution of site energies εi ).
Interplay of Disorder and Correlations
La = x ≥ 0.07) or partly (at x < 0.07) by random field of impurity La ions.
Phase diagram of mixed system of ferroelectric relaxors in the random field theory framework
If one considers several large samples differing by the impurity concentration c, the following properties are observed.
Random incidence matrices: moments of the spectral density
Physically the renormalization means that the limit of infinite small size impurity is not uniquely defined and depends on internal details of the scatterer.
Singular statistics
They also can be used in more general situations where exact solution are not available, e.g. for rank-two perturbations (2 short-range impurities) and similar problems.
Singular statistics