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radium sulfate
noun
Chemistry.
- a white, crystalline, water-insoluble, poisonous, radioactive solid, RaSO 4 , used chiefly in radiotherapy.
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Word History and Origins
Origin of radium sulfate1
First recorded in 1970–75
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Example Sentences
As Willis’s blog explains, the device’s radioactivity comes from tiny pieces of paper “uniformly loaded with radium sulfate.”
From Washington Post
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