noun Also x ray, X ray.
- Often x-rays.a form of electromagnetic radiation, similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases.
- such radiation having wavelengths in the range of approximately 0.1–10 nm.
verb (used with object)
Origin of x-ray
Related Words for x-rayradioactivity, radiograph, actinism, encephalogram, fluoroscope, refractometry
Examples from the Web for x-ray
Contemporary Examples of x-ray
An x-ray two hours later confirms my hunch: my tibia (the big bone behind the shin) is snapped clean in two.You’re Never ‘Cured’ of an Eating Disorder
December 20, 2014
(It has subsequently become standard procedure to X-ray a body as part of an autopsy).The Myth of the Central Park Five
October 19, 2014
The three astronomers argued persuasively that the rhythm of X-ray bursts they measured is most likely due to the M82 X-1.
For stellar-mass black holes, a reliable technique involves watching fluctuations in their X-ray emissions.
Thus, the SHU was chock full of contraband, because all the x-ray machines were used by the clinics and not the guards.Patted Down by India’s Hugging Saint
July 20, 2014
Historical Examples of x-ray
"The Koerting; so it is," said the Baron, when shown the X-ray photograph of his calf.
Better toss that thing as far away as you can in the morning, X-Ray.
And X-Ray was curious to know what its character might turn out to be.
X-Ray Tyson called out, having been observing what the other was doing.
X-Ray Tyson chuckled; but the other frowned and shook his head.
- electromagnetic radiation emitted when matter is bombarded with fast electrons. X-rays have wavelengths shorter than that of ultraviolet radiation, that is less than about 1 × 10 –8 metres. They extend to indefinitely short wavelengths, but below about 1 × 10 –11 metres they are often called gamma radiation
- (as modifier)X-ray astronomy
Word Origin for X-ray
1896, translation of German X-strahl, from X, algebraic symbol for an unknown quantity, + Strahl (plural Strahlen) "beam, ray." Coined 1895 by German scientist Wilhelm Conrad Röntgen (1845-1923), who discovered them.