roentgen ray

English Thesaurus

1. electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target (noun.phenomenon)

hypernym	:	ionizing radiation,
definition	:	high-energy radiation capable of producing ionization in substances through which it passes (noun.phenomenon)

hypernym	:	electromagnetic radiation, electromagnetic wave, nonparticulate radiation,
definition	:	radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge (noun.phenomenon)