actiniumUK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ækˈtɪnɪəm/US:USA pronunciation: respellingUSA pronunciation: respelling(ak tin′ē əm) No thesaurus entry found for 'actinium' ✓ See the definition of "actinium" in our monolingual dictionaryRecent forum discussions about thesaurus entries: No thread for "actinium"
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