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X-ray Definition

X·-ray (eks′rā′)

noun

  1. a band of electromagnetic radiation with wavelengths between gamma rays and ultraviolet radiation (c. .005 to c. 5 nanometers), produced by the bombardment of a substance (usually one of the heavy metals) by a stream of electrons moving at great velocity, as in a vacuum tube: X-rays are capable of penetrating opaque or solid substances, ionizing gases and body tissues through which they pass or, by extended exposure, destroying tissue, and affecting photographic plates and fluorescent screens: they are widely used in medicine for study, diagnosis, and treatment of certain organic disorders, esp. of internal structures of the body: usually used in pl.
  2. a photograph made by means of X-rays

Etymology: transl. of Ger x-strahl (< x, algebraic symbol for an unknown quantity + strahl, ray): so named by Wilhelm Konrad Roentgen (1895), because of its unknown character

adjective

of, by, or having to do with X-rays

transitive verb

to examine, treat, or photograph with X-rays

X-ray Usage Examples

Converse of object

  • penetrate: To simply become rays to possess the x-rays penetrated.
  • scan: Further investigations, such as blood tests, bone scan x-ray or pelvic ultrasound may be indicated.

Adjective modifier

  • abdominal: Plain abdominal x-rays are useful to detect gaseous distention of the dysfunctional organs.
  • lateral: Lateral neck x-ray shows soft tissue swelling in most patients.
  • plain: Plain x-rays of the pelvis were also normal at the time of follow up.
  • dental: However, only a low proportion of children in this age band had dental x-rays taken.
  • conventional: A conventional x-ray, often the first imaging technique used, looks for broken bones or an injured vertebra.
  • soft: The dividing line between hard and soft x-rays is not well defined and can depend on the context.

Modifies a noun

  • crystallography: They want to biology through x-ray crystallography is true of.
  • absorptiometry: The most common method of measuring bone density involves a simple test called dual energy x-ray absorptiometry ( DXA ).
  • diffraction: For small molecules, it is possible to analyze x-ray diffraction data by means of the direct methods.
  • fluorescence: To ensure that the composition of the alloy is correct, samples of the molten metal are routinely checked by x-ray fluorescence spectrometry.
  • photoelectron: The tutorial looks at the scientific principles of the surface analysis technique x-ray photoelectron spectroscopy ( XPS ).
  • scattering: Initial studies of PI systems, using small angle x-ray scattering, have suggested the formation of curved, type II, lipid interfaces.

Noun used with modifier

  • chest: A chest x-ray is usually normal in the early stages of the disease.
  • barium: It was amazing, tho, for me to see my equipment at work, as I could with the barium x-ray.
  • ramsay: Of the auctions be freed up was interest in william ramsay x-rays.
  • synchrotron: I am analyzing synchrotron x-ray diffraction patterns and to work out the diffractometer constants I refined a silicon pattern.
  • spine: Years ago, ( I think in my teen ) thy found on my spine x-ray that I had a curved spine.
  • skull: Skull X-Rays All head injured patients had plain skull X-rays performed on admission to hospital.