ionizing radiation

Definition / meaning of ionizing radiation

A type of radiation made (or given off ) by x-ray procedures, radioactive substances, rays that enter the Earth’s atmosphere from outer space, and other sources. At high doses, ionizing radiation increases chemical activity inside cells and can lead to health risks, including cancer.

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Find More About 'ionizing radiation'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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