| NOUN | artifact | X-ray tube | a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays |
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| Meaning | A vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays. | |
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| Part of | X-ray machine | An apparatus that provides a source of X rays |
| Broader | tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
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