LANTHANUM


Meaning of LANTHANUM in English

/ ˈlænθənəm; NAmE / noun

[ U ] ( symb La ) a chemical element. Lanthanum is a silver-white metal.

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WORD ORIGIN

mid 19th cent.: from Greek lanthanein escape notice (because it was long undetected in cerium oxide) + -um .

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