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im•pact



Pronunciation: (
n.im'pakt;
v.im-pakt'),
[key]
n.
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.
3. influence; effect: the impact of Einstein on modern physics.
4. an impacting; forcible impinging: the tremendous impact of the shot.
5. the force exerted by a new idea, concept, technology, or ideology: the impact of the industrial revolution.

v.t.
1. to drive or press closely or firmly into something; pack in.
2. to fill up; congest; throng: A vast crowd impacted St. Peter's Square.
3. to collide with; strike forcefully: a rocket designed to impact the planet Mars.
4. to have an impact or effect on; influence; alter: The decision may impact your whole career. The auto industry will be impacted by the new labor agreements.

v.i.
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.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

impimpact crater
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