impact

noun, verb — 8 senses

impact

noun

/ˈɪmpækt/

Etymology Attested since the 17th century, from Latin impāctus.

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

Medicine, Sciences A forced impinging.

  • His spine had an impingement; L4 and L5 made impact, which caused numbness in his leg.
4

Figuratively, Proscribed A significant or strong influence or 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.
3 more examples
  • December 7, 1941, November 22, 1963, and September 11, 2001 had an impact on many throughout the world.
  • The French revolution, the Russian revolution, and the Iranian revolution had an impact on many throughout the world.
  • One way to reduce the environmental impact of meat eating is to make livestock more productive.2016, Jayson Lusk, Unnaturally Delicious, →ISBN, page 111:
Synonyms
percussion
Derived terms
34 termsadverse impact, Charpy impact test, disimpact, environmental impact statement, giant impact theory, high-impact, impact aid, impact area, impact crater, impact drill, impact driver, impact energy, impact event, impact factor, impactful, impactite, impactive, impactless, impact matrix printer, impact melt, impactment, impact play, impact printer, impact resistance, impact sourcing, impact statement, impact winter, low-impact, nonimpact, postimpact, preimpact, second impact syndrome, vibroimpact, victim impact statement
Related terms
impinge

impact

verb

/ɪmˈpækt/

Etymology Attested since the 17th century, from Latin impāctus.

1

To collide or strike, the act of impinging.

  • When the hammer impacts the nail, it bends.
  • As a microbullet impacts the graphene, the diameter of the cone it creates – determined by later examination of the petals – provides a way to measure how much energy the graphene absorbs before breaking.2014 December 1, Mike Williams, “Microbullet hits confirm graphene’s strength”, in Rice University:
2

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

Figuratively, Proscribed To significantly or strongly influence or affect; to have an impact on.

  • I can make the changes, but it will impact the schedule.
4

Rare To stamp or impress onto something.

  • Ideas impacted on the mind.
Derived terms
impactable, impacter, impaction, impactor, reimpact

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.

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