Synonyms for Roentgen (same or very similar meaning)
WordNet sense 1 (a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air):
rWordNet sense 2 (German physicist who discovered x-rays and developed roentgenography (1845-1923)):
Rontgen, Wilhelm Konrad Roentgen, Wilhelm Konrad RontgenFrom the ODE community, based on WordNetadd/edit