x-ray

x-ray definition - medical

x-ray or X-ray

noun
  1. A relatively high-energy photon with wavelength in the approximate range from 0.01 to 10 nanometers. Also called roentgen ray.
  2. 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.
  3. A photograph taken with x-rays.
verb
  1. To irradiate with x-rays.
  2. To photograph with x-rays.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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