roentgen ray

Definitions of roentgen ray
  1. noun
    electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
    synonyms: X ray, X-radiation, X-ray, x-ray
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    type of:
    ionizing radiation
    high-energy radiation capable of producing ionization in substances through which it passes
    electromagnetic radiation, electromagnetic wave, nonparticulate radiation
    radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
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