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periodic law

n.
1.(chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers

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Word of the Day

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  • periodic event
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  • periodic breathing
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    Idiom of the Day

    play with fire
    to invite danger or trouble
    "You are playing with fire if you start that new project. You will lose money."



    1.
    This morning I received a cheque in the mail ________ one thousand dollars.

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