1. An area or region that has been polluted or made unsafe by the presence of harmful substances, radioactive material, or biological hazards
The nuclear accident created a large contaminated zone that was cordoned off for years.
O acidente nuclear criou uma grande zona contaminada que foi cercada durante anos.
2. A designated area restricted from public access due to environmental or health hazards
Health officials declared the water supply area a contaminated zone after chemical spillage.
As autoridades de saúde declararam a área de abastecimento de água uma zona contaminada após o derramamento de produtos químicos.