A contaminant is something that contaminates a substance such as water or food.
例句
Contaminants found in poultry will also be found in their eggs...家禽身上发现的污染物,在禽蛋里也会有。We are exposed to an overwhelming number of chemical contaminants every day in our air, water and food.我们每天都会通过空气、水和食品接触到数量惊人的化学污染物。
英汉词典释义
n.
污染物,致污物
houses made uninhabitable by radioactive contaminant受放射性污染物影响而不适合居住的房子