RADIUM


Meaning of RADIUM in English

[ 'reɪdɪəm ]

■ noun the chemical element of atomic number 88, a radioactive metal of the alkaline earth series. (Symbol: Ra )

Origin

C19: from L. radius 'ray' + -ium .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.