Impact | Mean of impact in English Dictionary

/ˈɪmˌpækt/

• Noun
• the act or force of one thing hitting another
1. No one could have survived such an impact.
2. The bomb exploded on/upon impact (with the ground). [=when it hit the ground]
• a powerful or major influence or effect
1. These warnings have been heard so often that they have lost their impact.
2. The book had a huge impact when it first came out.
3. We need to be concerned about the environmental impacts of all this construction.
4. She expects to make an immediate impact at work.
5. The stress of her job is having a negative impact on her health. [=is harming her health]
6. We hope that these programs will have a positive impact on the community. [=will help the community]
• Verb
• to have a strong and often bad effect on (something or someone)
1. No one is sure how these changes will impact our relations with other countries.
2. Both events negatively impacted her life.
3. The tax increase will impact low-income families the most.
4. The poor economy is impacting on/upon small businesses.

• to hit (something) with great force
1. A crater was formed at the point where the meteor impacted the planet's surface.