impact - definition and synonyms

 
 
 
noun 

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/ˈɪmpækt/
singularimpact
pluralimpacts
  1. 1
    [countable] an effect, or an influence
    impact on:

    Internet shopping has begun to have a serious impact on traditional bookshops.

    make an impact:

    She’s an excellent athlete who is already making a real impact in world competition.

  2. 2
    [countable/uncountable] an occasion when one object hits another

    the point of impact

    on impact:

    The missile exploded on impact.

    1. a.
      the force with which one objects hits another

      I was thrown to the ground by the impact.