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immure
immutable
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IMP
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imp. gal.
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impact adhesive
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impact printer
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impact

im·pact [ ím pàkt ]


noun  (plural im·pacts)
Definition:
 
1. action of hitting: the action of one object hitting another

2. force of collision: the force with which one object hits another

3. strong effect: the powerful or dramatic effect that something or somebody has



transitive and intransitive verb  (past and past participle im·pact·ed, present participle im·pact·ing, 3rd person present singular im·pacts)
Definition:
 
1. strike something: to strike something with force

2. have effect on something or somebody: to have an immediate and strong effect on something or somebody

[Early 17th century. < Latin impactus, past participle of impingere (see impinge)]

im·pac·tion [ im páksh'n ] noun

Word Usage

Many careful writers strongly dislike the verb impact in any figurative sense whatsoever, as in The revised budget impacts the university unfavorably and The revised budget impacts on the athletic program. Though the verb in senses extending beyond the infliction of physical force is undeniably common in business, legal, journalistic, and political discourse, anyone who hopes to achieve an effect even faintly literary should avoid it in favor of affect, change. Use of the verb is uncontroversial only in physical senses: The car impacted the railing. By the same token, the noun impact should not be used as a catchall alternative for words like effect or impression; rather, it should be used to convey the idea of powerful, dramatic consequence: The sudden rise in prices had a calamitous impact on many economies.

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