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radium Definition

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radium
noun(ra-di-um)
an intensely radioactive brilliant white metallic element that resembles barium chemically, occurs in combination in minute quantities in minerals (such as pitchblende or carnotite), emits alpha particles and gamma rays to form radon, and is used chiefly in luminous materials and in the treatment of cancer
radium
noun(ra-di-um)
radiotherapy

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