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molecular weight

n.
1.(chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule

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  • Idiom of the Day

    extend one's sympathy to (someone)
    to express sympathy to someone
    We extended our sympathy to the family of the dead woman.



    1.
    Because it is coming so close observers are hoping to settle the argument about life on the planet once and for ________ .

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