Word:

Rontgen ray

1.(Physics) An X-ray; originally, the term was applied to any of the rays produced when cathode rays strike upon surface of a solid (as the wall of the vacuum tube), but now it refers specifically to electromagnetic radiation having wavelengths from 10-3 nm to 10 nm, immediately below ultraviolet radiation on the wavelength scale. Röntgen rays are noted for their penetration of opaque substances, as wood and flesh, their action on photographic plates, and their fluorescent effects. They were called X rays by their discoverer, W. K. Röntgen. They are one of the forms of ionizing radiation, which can have damaging effects on living cells. They also ionize gases, but cannot be reflected, or polarized, or deflected by a magnetic field. They are used in examining opaque objects, especially in medicine for visualizing organs and other objects inside the human body, as for locating fractures or bullets, and examining internal organs for abnormalities.
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Rondeau
Rondel
rondelet
Rondeletia
Rondle
Rondo
Rondure
Roneo
Roneograph
Rong
Rongeur
Ronin
Ronion
Ronne
Ront
Rontgen
-- Rontgen ray --
Rontgenize
Rood
Rood beam
Rood loft
Rood of land
rood screen
Rood steeple
Rood tower
Rood tree
rood-tree
Roodebok
Roody
Roof
roof garden
roof mushroom
roof of the mouth
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