Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A relatively high-energy photon having a wavelength in the approximate range from 0.01 to 10 nanometers.
  • n. A stream of such photons, used for their penetrating power in radiography, radiology, radiotherapy, and scientific research. Often used in the plural. Also called roentgen ray.
  • n. A photograph taken with x-rays.
  • transitive v. To irradiate with x-rays.
  • transitive v. To photograph with x-rays.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative spelling of X-ray.

Etymologies

From the fact that it was a previously unknown form of radiation when first discovered.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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