x ray n electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target n a radiogram made by exposing photographic film to X rays; used in medical diagnosis Synonym(s) X ray X-ray X-radiation roentgen ray roentgenogram X-ray picture X-ray photograph
News & Articles x ray See Through Walls With Wi-Fi Want X ray vision like the man of steel? A technology that lets you see behind walls could soon be built in to your cell phone. July 2, 2013 - Fox News