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actinium [æk'tɪnɪəm] n
gen. Actinium n
chem. Aktinium n; Actinium n (Ac)
actinium A radioactive element of the actinide series, occurring as a decay product of uranium. It is used as an alpha particle source and in neutron production n
environ. Actinium n
 English thesaurus
Actinium [æk'tɪnɪəm] abbr.
abbr., scottish Ac
actinium: 146 phrases in 4 subjects
Chemistry5
Nuclear physics9
Physics4
Радиоактивное излучение128

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