What is the meaning of Contamination?

The act or process of contaminating.

Something which contaminates.

A process whereby words with related meanings come to have similar sounds.

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.

contamination (act or process of contaminating)

Source: wiktionary.org