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English definition of “impact”

impact

noun [C usually singular, U]     /ˈɪm.pækt/
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 ).Energy, force and powerPower and intensity 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 .Outcomes and consequences
(Definition of impact noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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