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activation energy

n.
1.the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur

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Word of the Day

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  • activation
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    Idiom of the Day

    a fine-toothed/tooth comb
    a very careful check of something
    We went over the apartment with a fine-toothed comb but I could not find my keys.



    1.
    A trained gang of sailors (a) / was employed (b) / on the ship. (c) / No error (d)

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