contamination
/kənˌtæmɪˈneɪʃən/
The act or process of contaminating
Something which contaminates.
A process whereby words with related meanings come to have similar sounds.
(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.