| radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x-rays, and gamma rays. |

electromagnetic radiation e·lec·tro·mag·net·ic radiation (ĭ-lěk'trō-māg-nět'ĭk)
n.
Radiation originating in a varying electromagnetic field, such as visible light, radio waves, x-rays, and gamma rays.