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X-ray   /ˈɛksrˌeɪ/   Listen
noun
X-ray, X ray  n.  (Physics) Originally, any of the rays produced when cathode rays strike upon surface of a solid (as a copper target or the wall of the vacuum tube); now defined as electromagnetic radiation with a wavelength of 0.1 to 10 nanometers. X-rays are noted for their penetration of many opaque substances, as wood and flesh, their action on photographic plates, and their fluorescent effects. They were called X rays by their discoverer, W. K. Röntgen, but were also referred to for some time as Roentgen rays. The term X-ray has become the most common designation. They also ionize gases, but cannot be reflected, or polarized, or deflected by a magnetic field. They are used in examining objects opaque to visible light, as for imaging bones or other structures inside the human body, and for detecting flaws in metal objects, such as in welds.



verb
X-ray, X ray  v. t.  To examine by means of X-rays; to irradiate with X-rays.






Collaborative International Dictionary of English 0.48








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"X-ray" Quotes from Famous Books



... arranged in associated groups. He may find, for instance, that he remembers the anatomical facts about the human eye most easily and correctly by associating them with their evolutionary history, or the facts about the bones of the hand by associating them with the visual image of a hand in an X-ray photograph. ...
— Human Nature In Politics - Third Edition • Graham Wallas

... without the room, unknown to the medium. Were the sittings held in complete darkness, these photographs could be obtained by means of ultra-violet light, with which the room might be flooded. In addition to these devices, we may add others—such as X-ray tubes, high-frequency currents and a delicate field of electric force,—while instruments for testing the ionization of the air (if it exists) in the immediate vicinity of the medium, during a seance, should also be employed,—together with the more strictly ...
— The Problems of Psychical Research - Experiments and Theories in the Realm of the Supernormal • Hereward Carrington

... up on the pastry table—there—that's all right. Now we'll take her blood pressure—here, Warb, you be taking her temperature, and send somebody for my stethoscope, and my case of instruments—and my X-ray apparatus. Now, my girl, don't cry. We'll fix you up." Petticoat lighted a cigarette and sat down to ...
— Ptomaine Street • Carolyn Wells

... all clear enough so far. The peculiar sound that filled the air was the hum of the interrupter; the bulb was, of course, a Crookes tube, and the red spot inside it, the glowing red-hot disc of the anti-cathode. Clearly an X-ray photograph was being made; but of what? I strained my eyes, peering into the gloom at the foot of the gallows, but though I could make out an elongated object lying on the floor directly under the bulb, I could not resolve the dimly seen shape into anything ...
— The Vanishing Man • R. Austin Freeman

... examination there is localised tenderness over the pelvic aspect of the acetabulum, and in some cases a convex projection, or even crepitating fragments can be detected. The diagnosis is completed by an X-ray picture. ...
— Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition. • Alexander Miles


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