Rys Rys (rīs
or rĭs)
noun A branch. [ Obsolete]
Chaucer.
Rysh Rysh (rĭsh)
noun Rush, a plant. [ Obsolete]
Chaucer.
Rysimeter Ry·sim"e·ter noun See Rhysimeter .
Ryth Ryth (rĭth)
noun [ Confer Anglo-Saxon
rið brook.]
A ford. [ Obsolete]
Rytina Ryt"i·na noun [ New Latin , from Greek
"ryti`s a wrinkle.]
(Zoology) A genus of large edentulous sirenians, allied to the dugong and manatee, including but one species ( R. Stelleri ); -- called also Steller's sea cow . [ Written also
Rhytina .] » It is now extinct, but was formerly abundant at Behring's Island, near Behring's Straits. It was twenty-five feet or more in length, with a thick, blackish, naked skin. The last were killed in 1768 for their oil and flesh.
Röntgen Rönt"gen adjective Of or pertaining to the German physicist Wilhelm Konrad Röntgen, or the rays discovered by him; as, Röntgen apparatus.
Röntgen ray Röntgen ray (Physics) Any of the rays produced when cathode rays strike upon surface of a solid (as the wall of the vacuum tube). Röntgen rays are noted for their penetration of many 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 also ionize gases, but cannot be reflected, or polarized, or deflected by a magnetic field. They are regarded as nonperiodic, transverse pulses in the ether. They are used in examining opaque objects, as for locating fractures or bullets in the human body.
Röntgenize Rönt"gen·ize transitive verb (Physics) To render (air or other gas) conducting by the passage of Röntgen rays.
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