n. Chem. a radioactive metallic element of the actinide series, occurring naturally in pitchblende. °Symb.: Ac.
ACTINIUM
Meaning of ACTINIUM in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012
n. Chem. a radioactive metallic element of the actinide series, occurring naturally in pitchblende. °Symb.: Ac.
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012