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Noun
roentgen
R
Definition: a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
Roentgen
Wilhelm Konrad Roentgen
Rontgen
Wilhelm Konrad Rontgen
Definition: German physicist who discovered x-rays and developed roentgenography (1845-1923)
Definition: Alternative form of röntgen