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impact - definition and synonyms


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noun impact pronunciation in American English /ˈɪmˌpækt/
Word Forms
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  1. 1
    [countable] an effect, or an influence
    Her paper discusses the likely impact of global warming on climate change.
    Tougher environmental laws could have negative impacts on economic growth.
    impact on: Internet shopping has begun to have a serious impact on the traditional bookstores.
    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.


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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