contamination
con·ta·mi·nation
noun
2.
a substance that contaminates
3.
the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
Origin
From Latin contāminātiōnem.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.