adulteration

[uh-duhl-tuh-rey-shuhn]
noun
1.
the act or process of adulterating.
2.
the state of being adulterated.
3.
something adulterated.

Origin:
1500–10; < Latin adulterātiōn- (stem of adulterātiō); see adulterate, -ion

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World English Dictionary
adulterate
 
vb
1.  (tr) to debase by adding inferior material: to adulterate milk with water
 
adj
2.  adulterated; debased or impure
3.  a less common word for adulterous
 
[C16: from Latin adulterāre to corrupt, commit adultery, probably from alter another, hence to approach another, commit adultery]
 
adulter'ation
 
n
 
a'dulterator
 
n

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Etymonline
Word Origin & History

adulteration
c.1500, from L. adulterationem (nom. adulteratio), from adulteratus, pp. of adulterare "corrupt, debauch," from ad- "to" + L.L. alterare "to alter" (see alter).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

adulteration a·dul·ter·a·tion (ə-dŭl'tə-rā'shən)
n.
The alteration, especially the debasement, of a substance by deliberately adding something not ordinarily a part of it.

The American Heritage® Stedman's Medical Dictionary
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Example sentences
One way to mask illicit adulteration is to add vegetable oil to boost the fat count and melamine to rig the protein figure.
It is suspected that the contamination occurred by direct adulteration with dried manure.
One thing to remember in all of this is that there have been examples of adulteration, deliberate and otherwise in homeopathy.
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