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non-ionizing radiation

(non-I-uh-NY-zing RAY-dee-AY-shun)
A type of low-energy radiation that does not have enough energy to remove an electron (negative particle) from an atom or molecule. Non-ionizing radiation includes visible, infrared, and ultraviolet light; microwaves; radio waves; and radiofrequency energy from cell phones. Most types of non-ionizing radiation have not been found to cause cancer.
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Search NCI's Dictionary of Cancer Terms