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A relatively high-energy photon having a wavelength in the approximate range from 0.01 to 10 nanometers.
(noun)
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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.
(noun)
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A photograph taken with x-rays.
(noun)
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To irradiate with x-rays.
(verb-transitive)
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To photograph with x-rays.
(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.