1. (noun)
roentgen, R
- a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air Synonyms: gas constant, radius, roentgen, universal gas constant
2. (noun)
Roentgen, Wilhelm Konrad Roentgen, Rontgen, Wilhelm Konrad Rontgen
- German physicist who discovered x-rays and developed roentgenography (1845-1923)
Synonyms of 'roentgen'
