CONTAMINATION
contamination, pollution
(noun) the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
contamination, taint
(noun) the state of being contaminated
contaminant, contamination
(noun) a substance that contaminates
Source: WordNet® 3.1
Noun
contamination (countable and uncountable, plural contaminations)
The act or process of contaminating
Synonyms: pollution, defilement, taint
Something which contaminates.
(linguistics) A process whereby words with related meanings come to have similar sounds.
(linguistics, etymology) The influence of one form (often from a foreign language) on the historical development of another form to which it may be related in meaning.
The process of making a material or surface unclean or unsuited for its intended purpose, usually by the addition or attachment of undesirable foreign substances.
Source: Wiktionary
Con*tam`i*na"tion, n. Etym: [L. contaminatio.]
Definition: The act or process of contaminating; pollution; defilement;
taint; also, that which contaminates.
Source: Webster’s Unabridged Dictionary 1913 Edition