
[From Latin impāctus, past participle of impingere, to push against. See impinge.]
impaction im·pac'tion n.USAGE NOTE The use of impact as a verb meaning "to have an effect" often has a big impact on readers. In our 2001 survey, 85 percent of the Usage Panel disapproved of the construction to impact on, as in the sentence These policies are impacting on our ability to achieve success; fully 80 percent disapproved of the use of impact as a transitive verb in the sentence The court ruling will impact the education of minority students. • It is unclear why this usage provokes such a strong response, but it cannot be because of novelty. Impact has been used as a verb since 1601, when it meant "to fix or pack in," and its modern, figurative use dates from 1935. It may be that its frequent appearance in the jargon-riddled remarks of politicians, military officials, and financial analysts continues to make people suspicious. Nevertheless, the verbal use of impact has become so common in the working language of corporations and institutions that many speakers have begun to regard it as standard. It seems likely, then, that the verb will eventually become as unobjectionable as contact is now, since it will no longer betray any particular pretentiousness on the part of those who use it. See Usage Notes at contact.
The Magazine...is not the place for consideration of national or international events except in so far as they impact on Oxford—Oxford Magazine, 1956
Radiographers are a dedicated and highly professional group of workers and regret any action which impacts on patient care—Manchester Evening News, 2004.There has been continued opposition to these uses, both in Britain and in America. When there is so much hostility, it is prudent to use more familiar synonyms, such as effect, influence, and impression for the noun and affect, influence, or have an effect on (or, more specifically, endanger, threaten, risk, etc., when the consequences are unfavourable) for the verb.
| immunity, impunity, immune, immovable | |
| impassable, impassible, impasse, impeach |
A force, also known as impulsive force, which acts only during a short time interval but which is sufficiently large to cause an appreciable change in the momentum of the system on which it acts. The momentum change produced by the impulsive force is described by the momentum-impulse relation. See also Collision (physics); Impulse (mechanics).
noun
The collision of two bodies characterized by the exchange of a large force or forces during a small time interval.
(see Crater) The forceful striking of one body, such as a meteorite, against another body such as a moon or planet.
A life is not important, except in the impact it has on other lives.
— Jackie Robinson, baseball player and civil rights activist.
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The condition of being impacted. Most commonly a condition in the alimentary tract of herbivores fed on roughage of poor digestibility. See also impactions of anal sacs of dogs, oviduct of birds, scent glands of ruminants.

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Dansk (Danish)
n. - stød, tryk, slag, indtryk, indvirkning
v. tr. - presse ind, presse sammen
v. intr. - have indvirkning på
idioms:
Nederlands (Dutch)
impact, schok, raken, treffen
Français (French)
n. - impact, choc, percussion, (Phys) impact, (fig) impact, impression
v. tr. - enfoncer, presser (dans)
v. intr. - (fig) influer (sur)
idioms:
Deutsch (German)
n. - Wirkung, Aufprall, Einschlag
v. - einklemmen
idioms:
Ελληνική (Greek)
n. - πρόσκρουση, κρούση, σύγκρουση, κτύπημα, χτύπος, (μτφ.) επίδραση, αποτέλεσμα, επιρροή, αντίκτυπος, επίπτωση
v. - προσκρούω
idioms:
Italiano (Italian)
impatto, comprimere
idioms:
Português (Portuguese)
n. - impacto (m)
v. - atingir, imprensar
idioms:
Русский (Russian)
удар, толчок, воздействие, столкновение, ударяться, уплотнять, усиливать
idioms:
Español (Spanish)
n. - impacto, choque, colisión, efecto, repercusión, consecuencia
v. tr. - apretar fuerte, meter y sujetar firmemente
v. intr. - tener impacto o efecto
idioms:
Svenska (Swedish)
n. - stöt (isht mek.), kollision, anslag (om projektil), (genomslags)kraft, inverkan, följd, intryck
v. - pressa samman, fylla, kollidera med, kraschlanda på, träffa
中文(简体)(Chinese (Simplified))
冲击, 碰撞, 撞击, 影响, 冲击力, 撞击力, 作用, 挤入, 压紧, 产生影响
idioms:
中文(繁體)(Chinese (Traditional))
n. - 衝擊, 碰撞, 撞擊, 影響, 衝擊力, 撞擊力, 作用
v. tr. - 擠入, 壓緊, 撞擊
v. intr. - 衝擊, 碰撞, 撞擊, 產生影響
idioms:
한국어 (Korean)
n. - 충돌, 감화, 꽉 끼우기
v. tr. - ~에 꽉 채우다, ~에 충돌하다
v. intr. - 강한 충격을 받다, 세게 부딪히다
日本語 (Japanese)
n. - 衝撃, 衝突, 影響, 効果
v. - 密着させる, 衝突する, 強い衝撃を与える
العربيه (Arabic)
(الاسم) أثر, تأثير (فعل) يؤثر في
עברית (Hebrew)
n. - התנגשות, השפעה, רושם, מגע, דחיפה, השלכה
v. tr. - לחץ, דחס, נעץ
v. intr. - השפיע
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