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activate

v.
1.put in motion or move to act
2.make active or more active
3.make more adsorptive
4.aerate (sewage) so as to favor the growth of organisms that decompose organic matter
5.make (substances) radioactive

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    Idiom of the Day

    hard on (someone's) heels
    to be following someone very closely
    The police officer was hard on the heels of the criminal.



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