impact

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Related to impaction: inertial impaction, tooth impaction

have an impact on (someone or something)

To affect or influence someone or something. Of course your decision has an impact on me—I'm your wife! Don't worry, your grade on that assignment has very little impact upon your overall grade for the semester.
See also: have, impact, on

impact (up)on (someone or something)

To affect or influence someone or something. Of course your decision impacts on me—I'm your wife! Don't worry, your grade on that assignment won't impact upon your overall grade for the semester.
See also: impact

upon impact

At the instant physical contact or a collision occurred. The egg smashed upon impact with the cement. No, sir, the pilot died upon impact.
See also: impact, upon
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

have an impact on someone or something

to leave an impression on someone or something. The sharp change in interest rates had an impact on the housing market. Your story really had an impact on me.
See also: have, impact, on

impact (up)on someone or something

[for something] to have an effect on someone or something. (Upon is formal and less commonly used than on.) This plant closing will impact upon the local economy for years to come. The day's troubles impacted on Rachel quite seriously.
See also: impact, on

upon impact

Fig. at the place or time of an impact. The car crumpled upon impact with the brick wall. The man who fell from the top of the building died on impact.
See also: impact, upon
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

impact on

v.
To have an effect on someone or something: The results of the election will impact on upcoming legislation.
See also: impact, on
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
In the age group of 26-30 years, the results from Graphs 3 and 4 show the mesioangular third molar impactions (67%) which more frequently cause an effect on adjacent second molar which results in decay while the vertical and distoangular third molar impaction (0%) shows no effect on adjacent second molar.
The 15-25 years age group (22.48+1.6) had the highest prevalence of tooth impactions (65.78%) followed by 28.94% of patients which aged between 26 to 35 years (31.09+ 3.08) and than those age 36 to 45 years (43.5+ 2.12)were only 5.26%.
Qualitative variables including gender, type of foreign body, clinical features, site of impaction etc were expressed in term of frequencies and percentages while age was expressed as mean and standard deviation.
The increase in glucose level may be due to stress caused by rumen impaction which leads to release of adrenocorticosteroid release, which has glycogenolytic effect causing hyperglycemia (Hussain and Uppal, 2012).
Impaction of foreign bodies at the cricopharyngeus and cervical oesophagus is common among adults.
Although not confirmed, a behavioral problem could have contributed to the artificial turf impaction in the captive gyrfalcon (18) and ingestion and impaction of plant material provided for aesthetics and enrichment in the enclosure of 3 captive kingfishers.
SC has a clinical course ranging from noncomplicated fecaloid impaction to colonic perforation.
Student's t-test for independent samples was applied to analyze the gender and impaction side variables.
Our patient had EOE evaluation for vomiting, food impaction, and abdominal pain.
Esophagogastroduodenoscopy (EGD) showed the patient had prior food bolus impaction now presenting with food impaction.
A foreign body impaction (FBI) in the esophagus can be a serious condition with high mortality rate among children and adults.
Upper digestive tract foreign body impaction may present as an emergency and if not treated immediately may lead to catastrophic outcome.
Children with a button battery impaction present with nonspecific symptoms that may account for a delay in medical care.
The objective of this study was to evaluate the eruption status of third molars and the type of impaction in south Indian population within the age group of 18-26 years.