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actinide series
noun
, Chemistry.
- the series of radioactive elements that starts with actinium and ends with lawrencium.
actinide series
noun
- a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
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Word History and Origins
Origin of actinide series1
First recorded in 1940–45
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[in-vet-er-it ]
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