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impurity

[im-pyoo r-i-tee] /ɪmˈpyʊər ɪ ti/
noun, plural impurities for 2.
1.
the quality or state of being impure.
2.
Often, impurities. something that is or makes impure:
After the flood the authorities warned against impurities in the drinking water.
Origin
late Middle English
1400-1450
1400-50; late Middle English impurite < Latin impūritās. See impure, -ity
Synonyms
1. contamination, pollution, taint.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for impurity
  • To be virtuous is to be physically clean and free from the impurity that is sin.
  • The problem of impurity is especially germane to herbal combinations.
  • Copper sulfide ores have copper selenide as an impurity.
British Dictionary definitions for impurity

impurity

/ɪmˈpjʊərɪtɪ/
noun (pl) -ties
1.
the quality of being impure
2.
an impure thing, constituent, or element: impurities in the water
3.
(electronics) a small quantity of an element added to a pure semiconductor crystal to control its electrical conductivity See also acceptor (sense 2), donor (sense 5)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for impurity
n.

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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