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   Anglais
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actinium [æk'tɪnɪəm] n
chim. attinju
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 [æk'tɪnɪəm] n
envir. aktinju
 Anglais glossaire
Actinium [æk'tɪnɪəm] abbr.
abrév., écoss. Ac