From The Art and Popular Culture Encyclopedia
- Short wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.
- X-rays are light with a wavelength between 0.1 and 10 nm.
- A radiograph: a photograph made with X-rays.
- "The doctor ordered some X-rays of my injured wrist."
- An X-ray machine.
- The letter X in the ICAO spelling alphabet.