RUBIDIUM


Meaning of RUBIDIUM in English

/ rʊˈbɪdiəm; NAmE / noun

[ U ] ( symb Rb ) a chemical element. Rubidium is a rare soft silver-coloured metal that reacts strongly with water and burns when it is brought into contact with air.

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WORD ORIGIN

mid 19th cent.: modern Latin , from Latin rubidus red (with reference to its spectral lines).

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