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actinide series

n.
1.a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
2.(chemistry) a series from actinium to lawrencium of 15 radioactive elements with increasing atomic numbers

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  • Idiom of the Day

    take (someone or somewhere) by storm
    to win the favor of someone or somewhere, to become popular with a group of people
    The new rock band took the country by storm.



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    Angelical

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