[ noun im-pakt; verb im-pakt ]
1 the striking of one thing against another; forceful contact; collision: The impact of the colliding cars broke the windshield.
2 an impinging: the impact of light on the eye.
verb (used without object)
1 to have impact or make contact forcefully: The ball impacted against the bat with a loud noise.
2 to have an impact or effect: Increased demand will impact on sales.