1 to have an influence on something: --
Falling export rates have impacted (on) the country's economy quite considerably.
2 the force with which one thing hits another or with which two things hit each other: --
3 the strong effect or influence that something has on a situation or person: --
The environmental impact of this project will be enormous.
These charges will have a damaging impact on the army’s reputation.
4 to have a strong effect or influence on a situation or person: --
5 a powerful effect that something, especially something new, has on someone or something: --
have an impact on/upon sb/sth Microenterprises can have a negative or positive impact on the environment.
We judge that these developments will have little impact on our business.
a big/huge impact Social networks are making a huge impact on sales, with fans recommending brands to hundreds of their friends.
Perhaps a clearer way to assess the impact of a pension reform could use ' ' typical ' ' career earnings paths, holding constant overall contributions.
In research on the policy impact of partisan governments, parties are often - although mostly implicitly - conceptualised as policy oriented.
The net impact concerns the effect on parties.
Recent legislation requiring pharmaceutical manufacturers to present economic evaluations when requesting reimbursement decisions will probably have an important impact in the future.
However, some participants reported that cancer had no impact on their life priorities.
The impact that patenting has on research is enhanced and reinforced by an additional range of factors.
Observation and interviews with the children and the classroom teachers were used as a means to gather data on the potentially psychological impact of singing.
The impact of singing on children's psychological state and well-being was investigated with a participant population of 76 pre-pubertal children.