roentgen

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a unit of radiation exposure;
the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
• Syn:
R
• Hypernyms:
radioactivity unit

• Từ đồng nghĩa / Synonyms:
  Roentgen, Wilhelm Konrad Roentgen, Rontgen, Wilhelm Konrad Rontgen, R