contamination
noun
the act of contaminating, or of making something impure or unsuitable by contact with something unclean, bad, etc.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Learning how to put on and remove this medical armor is among crucial steps in Ebola training - to avoid self-contamination and spreading the disease to others.
From Washington Times ● Oct. 9, 2014