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Click here to customize search results and save them for next searches! English To Russian - actinide  актинид; актиноид English To Turkish - actinide  aktinit French To English - actinide  (m) n. actinide, any of a series of radioactive elements with atomic numbers 89 through 103 English To English - actinide  [Actinide] n. actinide, any of a series of radioactive elements with atomic numbers 89 through 103