Definition of "impact" [im•pact]

  • The striking of one body against another; collision. See Synonyms at collision. (noun)
  • The force or impetus transmitted by a collision. (noun)
  • The effect or impression of one thing on another: still gauging the impact of automation on the lives of factory workers. (noun)
  • The power of making a strong, immediate impression: a speech that lacked impact. (noun)
  • To pack firmly together. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "impact" in a sentence
  • "A number of studies on the social impact of the Tangaye project were undertaken by Roberts. 3 These studies examined the “impact of mechanising arduous, time-consuming village tasks on the life of women, with the power source viewed as a black-box”. 4 They were studies of the effects of pumped water supply and a power-operated grain mill in a remote village."
  • "I define and use the term impact indicators as those issues that directly affect positively or negatively food security such as population, water, land, and economic growth/development."
  • "Mr. Roberts said the company can better absorb the margin impact from the deal now that costs are lowered."