| NOUN | phenomenon | roentgen ray, X ray, X-ray, X-radiation | electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target |
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| Meaning | electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target. | |
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| Synonyms | X ray, X-ray, X-radiation | |
| Broader | 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 |
| ionizing radiation | high-energy radiation capable of producing ionization in substances through which it passes | |
| Spanish | rayo-x, roentgen ray | |
| Catalan | raig-x, roentgen ray | |
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