roentgen

Từ điển Oxford Advanced Learner 8th

roent·gen 7 [roentgen roentgens] BrE [ˈrɜːntjən] BrE [ˈrɒntjən] BrE [ˈrɜːntɡən] BrE [ˈrɒntɡən] NAmE [ˈrentjən] NAmE [ˈrəntjən] NAmE [ˈrentdʒən] NAmE [ˈrəntdʒən] noun (physics) (abbr.R)
a unit of ↑radiation, used to measure the quantity of ↑X-rays or ↑gamma rays that have reached sb/sth

Word Origin:
1920s: named after Wilhelm Conrad Röntgen (1845–1923), German physicist, discoverer of X-rays.

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