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contaminant
/kənˈtæmɪnənt/
noun
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A substance that makes something impure or polluted by its presence.
- The water supply was tested for bacterial contaminants.
- Industrial waste released dangerous contaminants into the river.
- They found traces of a chemical contaminant in the soil samples.
- Environmental engineers develop filtration systems to remove heavy metal contaminants from municipal water supplies effectively.
- Food safety inspectors regularly test agricultural products for pesticide contaminants that exceed regulatory thresholds.
- The nuclear accident released radioactive contaminants into the atmosphere, prompting evacuations and long-term health monitoring programs.