contamination
Americannoun
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the act of contaminating, or of making something impure or unsuitable by contact with something unclean, bad, etc.
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the act of contaminating, or of rendering something harmful or unusable by the addition of radioactive material.
the contamination of food following a nuclear attack.
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the state of being contaminated.
The manufacturer recalled the product because of possible salmonella contamination.
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Rare. something that contaminates a place or substance, as by making it impure, unsuitable, harmful, or unusable; a contaminant.
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Linguistics.
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an alternation in a linguistic form due to the influence of a related form, as the replacement in English of earlier femelle with female through the influence of male.
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the process of forming blends.
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noun
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the act or process of contaminating or the state of being contaminated
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something that contaminates
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linguistics the process by which one word or phrase is altered because of mistaken associations with another word or phrase; for example, the substitution of irregardless for regardless by association with such words as irrespective
Other Word Forms
Derived Forms
Etymology
Origin of contamination
1375–1425; late Middle English contaminacioun < Late Latin contāminātiōn- (stem of contāminātiō ), equivalent to contāmināt ( us ) ( see contaminate) + -iōn- -ion
Explanation
Contamination is the unwanted pollution of something by another substance. When a nuclear power plant leaks radiation into the atmosphere, for example, it causes a contamination of the surrounding area. Contamination can also be used to refer to abstract ideas and concepts rather than to just physical things. The French complain that the increasing adoption of English words is a contamination of their linguistic heritage, and many parents today think rap music is a contamination of the public culture.
Vocabulary lists containing contamination
This Week in Words: March 23–29, 2019
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
If contamination is detected, park officials may need to temporarily shut down pumping operations until the issue is addressed.
From Science Daily • Jun. 2, 2026
It also aims at "compensating all victims of this contamination" in Guadeloupe and Martinique.
From Barron's • Jun. 2, 2026
"Some people are thinking Ebola is genetic, it's a contamination," he stated.
From BBC • May 26, 2026
The lawsuit says that residents were subjected to “evacuation orders, shelter-in-place directives, exposure concerns, noxious chemical odors, fear of contamination, interference with the use and enjoyment of their homes and properties, and other damages.”
From Los Angeles Times • May 24, 2026
White immigrants, in contrast, were not so easy to identify and separate, thus amplifying the anxieties of ethnic contamination and miscegenation in the 1920s.
From "The Gene" by Siddhartha Mukherjee
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
