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X-ray Line breaks: X-ray
Pronunciation: /ˈɛksreɪ/

Definition of X-ray in English:


1An electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light: [as modifier]: an X-ray source
More example sentences
  • Gamma rays are not particles but a form of electromagnetic radiation, like light, radio waves, and X-rays.
  • It was designed to study X-rays and gamma rays from solar flares.
  • Most known radiation dangers occur at the high end of the electromagnetic spectrum, and include X-rays and gamma rays.
1.1 [as modifier] informal Denoting an apparent or supposed faculty for seeing beyond an outward form: you didn’t need X-ray eyes to know what was going on
More example sentences
  • Television doctor Chris Steele has been given the all-clear from cancer after a ‘diagnosis’ from a Russian teenager who claims to have X-ray eyes.
  • I've also got X-ray vision, Super breath, and can leap four Range Rovers in a single bound.
  • Superman has X-ray vision: walls become permeable, transparent.
2A photographic or digital image of the internal composition of something, especially a part of the body, produced by X-rays being passed through it and being absorbed to different degrees by different materials: the fracture was clearly visible on the X-ray we’ll take an X-ray
More example sentences
  • Often used to identify fractures or tumors that may not be visible on an X-ray.
  • Having the ability to analyze X-rays and scans digitally from a remote location can be extremely valuable.
  • In this procedure, a special contrast material is injected into one of your milk ducts before the X-ray images are taken.
2.1An act of making an X-ray of someone or something: he will have an X-ray today [mass noun]: would you send her for X-ray?
More example sentences
  • The doctor may need to take several tests, including blood tests or X-rays, to diagnose your child.
  • You may need X-rays or an ultrasound to check the kidneys and ureters.
  • Chief Executive Steve Ferres said that Ramsden was having an X-ray on the injury today to assess the extent of the damage.
3A code word representing the letter X, used in radio communication.


[with object] Back to top  
Photograph or examine with X-rays: luggage bound for the hold is X-rayed
More example sentences
  • The body is X-rayed from many angles, and the X-rays are then analyzed by a computer.
  • Casualties are X-rayed to pinpoint the location of coins and some require surgery.
  • I was X-rayed, and had lots of nurses and doctors coming in and out of the room.


Translation of German X-Strahlen (plural), from X- (because, when discovered in 1895, the nature of the rays was unknown) + Strahl 'ray'.

Definition of X-ray in:
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