Roent·gen (r nt g n, -jn, r nt-) or Rönt·gen (r ntgn), Wilhelm Konrad 1845-1923. German physicist who discovered x-rays and developed x-ray photography, revolutionizing medical diagnosis. He won a 1901 Nobel Prize. |
| roent·gen also rönt·gen (rntgn, -jn, rnt-) n. Abbr. R or r A unit of radiation exposure equal to the quantity of ionizing radiation that will produce one electrostatic unit of electricity in one cubic centimeter of dry air at 0°C and standard atmospheric pressure. [After Wilhelm Konrad Roentgen.] roent gen adj. |
roentgen, röntgen [ˈrɒntgən -tjən ˈrɛnt-]
n
(Mathematics & Measurements / Units) a unit of dose of electromagnetic radiation equal to the dose that will produce in air a charge of 0.258 ✕ 10-3 coulomb on all ions of one sign, when all the electrons of both signs liberated in a volume of air of mass one kilogram are stopped completely. Symbol R, r
[named after German physicist W. K. Roentgen or Röntgen (1845-1923), who discovered X-rays]
Roentgen, Röntgen [ˈrɒntgən -tjən ˈrɛnt- (German) ˈrœntgən]
n
(Biographies / Roentgen, Wilhelm Konrad (1845-1923) M, German, SCIENCE: physicist) Wilhelm Konrad (ˈvɪlhɛlm ˈkɔnraːt). 1845-1923, German physicist, who in 1895 discovered X-rays: Nobel prize for physics 1901
A unit of exposure dose of gamma (or X-) radiation. In field dosimetry, one roentgen is essentially equal to one rad.
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  roentgen - a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry airradioactivity unit - a measure of radioactivity |
| 2. |  Roentgen - German physicist who discovered x-rays and developed roentgenography (1845-1923) |
Translations
roentgen
n → Röntgen nt
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