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x-rays

 - 5 dictionary results
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x-ray

  [eks-rey]
Use x-rays in a Sentence
–noun Also, x ray, X ray.
1. Physics.
a. Often, x-rays. a form of electromagnetic radiation, similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases.
b. such radiation having wavelengths in the range of approximately 0.1–10 nm.
2. a radiograph made by x-rays.
3. (initial capital letter) a word in communications to represent the letter X.
–verb (used with object)
4. to examine, photograph, or treat with x-rays.
–adjective
5. of or pertaining to x-rays.
Also, X-ray.

Origin:
1895–1900; trans. of G X-Strahl (1895), the name orig. given to the rays by Röntgen, their discoverer, x signifying their unknown nature
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To x-rays
South Bay Digital X-rays
Less Radiation, Fewer Exposures! Open Mon-Sat - 310-303-7930.
www.smileworks.dds.com
X-ray power supply
Up to 300 kV, 300 mA, 90kW Intense X-ray, ion, electron beam
www.phoenixnuclearlabs.com
x-ray also X-ray   (ěks'rā')
n.   also x ray or X ray

    1. A relatively high-energy photon having a wavelength in the approximate range from 0.01 to 10 nanometers.

    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.

  2. A photograph taken with x-rays.

tr.v.   x-rayed also X-rayed, x-ray·ing also X-ray·ing, x-rays also X-rays

  1. To irradiate with x-rays.

  2. To photograph with x-rays.


[From the fact that it was a previously unknown form of radiation when first discovered.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: x–ray
Pronunciation: 'eks-"rA
Function: transitive verb
often capitalized X : to examine, treat, or photograph with X rays
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

x-ray or X-ray
n. or x ray or X ray

  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.

v. x-rayed or X-rayed, x-ray·ing or X-ray·ing, x-rays or X-rays

  1. To irradiate with x-rays.

  2. To photograph with x-rays.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
x-ray also X-ray   (ěks'rā')  Pronunciation Key 

  1. A high-energy stream of electromagnetic radiation having a frequency higher than that of ultraviolet light but less than that of a gamma ray (in the range of approximately 1016 to 1019 hertz). X-rays are absorbed by many forms of matter, including body tissues, and are used in medicine and industry to produce images of internal structures. See more at electromagnetic spectrum.

  2. An image of an internal structure, such as a body part, taken with x-rays.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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