Material that emits radiation energy in the form of alpha, beta, or gamma particles or rays - all of which can damage living tissue.

Use radioactive in a sentence

  • Some chemicals can be radioactive and you must take a lot of care when you are moving or storing them.

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  • When you accompany a patient to CT, wear a lead vest for your protection; because the surrounding area is radioactive.

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  • Madam Curie's papers are still radioactive to this day. This shows her dedication to science and innovation for human success.

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