impact
Pronunciation
  • (noun) enPR: imʹpăkt, IPA: /ˈɪmpækt/
  • (verb) enPR: im-păktʹ, IPA: /ɪmˈpækt/
Noun

impact

  1. The striking of one body against another; collision.
  2. The force or energy of a collision of two objects.
    The hatchet cut the wood on impact.
  3. (chiefly, medicine) A forced impinging.
    His spine had an impingement; L4 and L5 made impact, which caused numbness in his leg.
  4. A significant or strong influence; an effect.
    His friend's opinion had an impact on his decision.
    Our choice of concrete will have a tremendous impact on the building's mechanical performance.
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impact (impacts, present participle impacting; past and past participle impacted)

  1. (transitive) To collide or strike, the act of impinging.
    When the hammer impacts the nail, it bends.
  2. (transitive) To compress; to compact; to press into something or pack together.
    The footprints of birds do not impact the soil in the way those of dinosaurs do.
  3. (transitive, proscribed) To influence; to affect; to have an impact#Noun|impact on.
    I can make the changes, but it will impact the schedule.
  4. (transitive, rare) To stamp or impress onto something.
    Ideas impacted on the mind.
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