Definitions
1.nounThe act or process of contaminating
2.nounSomething which contaminates.
3.nounA process whereby words with related meanings come to have similar sounds.
4.noun(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.
5.nounThe process of making a material or surface unclean or unsuited for its intended purpose, usually by the addition or attachment of undesirable foreign substances.