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English definition of “impact”

impact

noun [C usually singular, U] uk   /ˈɪm.pækt/ us  
C2 the force or action of one object hitting another: The impact of the crash reduced the car to a third of its original length. The bullet explodes on impact (= when it hits another object). B2 a powerful effect that something, especially something new, has on a situation or person: The anti-smoking campaign had had/made quite an impact on young people. The new proposals were intended to soften the impact of the reformed tax system.

impact

verb [I or T] uk   /ɪmˈpækt/ mainly US us  
C1 to have an influence on something: Falling export rates have impacted (on) the country's economy quite considerably.
(Definition of impact from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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