RADIUM


Meaning of RADIUM in English

/ ˈreɪdiəm; NAmE / noun

[ U ] ( symb Ra ) a chemical element. Radium is a white radioactive metal used in the treatment of diseases such as cancer.

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WORD ORIGIN

late 19th cent.: from Latin radius ray + -ium .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.