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actinium

8 huruf Bahasa Inggris

Definition of actinium (English)

noun

  1. a radioactive element of the actinide series; found in uranium ores
    sumber: wordnet30
  2. A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.
    sumber: webster1913

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