Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun roentgen

2 senses of roentgen

Sense 1
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)
       => radioactivity unit -- (a measure of radioactivity)

Sense 2
Roentgen, Wilhelm Konrad Roentgen, Rontgen, Wilhelm Konrad Rontgen -- (German physicist who discovered x-rays and developed roentgenography (1845-1923))
       INSTANCE OF=> physicist -- (a scientist trained in physics)