"Radioactive contamination" refers to the presence of harmful radioactive substances on objects, surfaces, or in the environment. These substances emit radiation which can be dangerous to human health or the environment. Full definition
That broad - brush impression of radioactive contamination of the landscape isn't sufficient for population studies. (science.sciencemag.org)
The issue was higher than normal radioactive contamination in the water that the fuel rods heat to produce steam. (wrvo.org)
The home secretary reiterated that members of the public should not be overly worried by ongoing investigations into possible radioactive contamination. (politics.co.uk)