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aqua regia

n.
1.a yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold)

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Word of the Day

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    Idiom of the Day

    at all costs
    regardless of the cost or difficulty, no matter what
    The company wants to protect their product design at all costs.



    1.
    Hurry up- the taxi's ________ to arrive.

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