contaminate
US /kənˈtæm.ə.neɪt/
UK /kənˈtæm.ə.neɪt/

1.
verontreinigen, besmetten
make (something) impure or unsuitable by mixing or touching with something unclean or harmful
:
•
The spill could contaminate the entire water supply.
De lekkage kan de hele watervoorziening verontreinigen.
•
Be careful not to contaminate the sample with your bare hands.
Pas op dat je het monster niet verontreinigt met je blote handen.