放射性污染 fàngshèxìngwūrǎn radioactive contamination Origin Definitions Defs Strokes Stroke Words Sentences Sents 放射性 fàngshèxìng noun radioactivity the property of certain elements to spontaneously emit radiation as their atomic nuclei decay; also used to describe things that are radioactive污染 wūrǎn verbnoun pollution; to pollute pollution; contamination; to pollute or contaminate (physically or figuratively)