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actinium [æk'tɪnɪəm] n
gen. actinio m
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. actinio m
 English thesaurus
Actinium [æk'tɪnɪəm] abbr.
abbr., scottish Ac
actinium: 3 phrases in 1 subject
Chemistry3