Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “impact”

See all translations

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.
More examples

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)
What is the pronunciation of impact?
Add Cambridge dictionaries to your browser to your website

Definitions of “impact” in other dictionaries

Word of the Day

be in/out of luck

to be able/unable to have or do what you want

Word of the Day

A certain je ne sais quoi: French words and phrases used in English

by Liz Walter,
January 21, 2015
It is an odd irony that the more sophisticated your use of English is, the more likely you are to use French words and phrases. Or, to be more accurate, ones you know to be French – words such as ballet, au pair, abattoir, fiancé, café, and restaurant are so entrenched in

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More