American Heritage® Dictionary of the English Language, Fourth Edition
- n. The striking of one body against another; collision. See Synonyms at collision.
- n. The force or impetus transmitted by a collision.
- n. The effect or impression of one thing on another: still gauging the impact of automation on the lives of factory workers.
- n. The power of making a strong, immediate impression: a speech that lacked impact.
- v. To pack firmly together.
- v. To strike forcefully: meteorites impacting the lunar surface.
- v. Usage Problem To have an effect or impact on: "No region ... has been more impacted by emerging demographic and economic trends” ( Joel Kotkin).
- v. Usage Problem To have an effect or impact.
Century Dictionary and Cyclopedia
- To drive close; press closely or firmly; pack in.
- n. The act of striking against something; a blow; a stroke.
- n. Specifically — In mech., the blow, or act of striking, of a body having momentum; also, the change of momentum in amount and direction produced by such a blow.
- n. In gunnery, the single blow of a projectile against a fixed or moving object.
- n. The force or energy of a collision of two objects.
- n. A forced impinging.
- n. A significant or strong influence; an effect.
- v. transitive To compress; to compact; to press or pack together.
- v. transitive, proscribed To influence; to affect; to have an impact on.
- v. transitive To collide or strike.
GNU Webster's 1913
- v. To drive close; to press firmly together: to wedge into a place.
- v. To affect or influence, especially in a significant or undesirable manner.
- v. To collide forcefully with; to strike.
- n. Contact or impression by touch; collision; forcible contact; force communicated.
- n. (Mech.) The single instantaneous stroke of a body in motion against another either in motion or at rest.
- v. press or wedge together; pack together
- n. a forceful consequence; a strong effect
- n. influencing strongly
- v. have an effect upon
- n. the striking of one body against another
- n. the violent interaction of individuals or groups entering into combat
- From Latin impāctus, perfect passive participle of impingō ("dash against, impinge"). (Wiktionary)
- From Latin impāctus, past participle of impingere, to push against; see impinge. (American Heritage® Dictionary of the English Language, Fourth Edition)
“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.”
“You guys are delusional … Flora brings together excellent quotes, and the main impact is … (as she puts in her piece), “the war will only be lost at home”.”
“But their impact is usually as decaying, moisture-laden tropical storms (wind speeds under 74 miles per hour) or their remnants, rather than hurricanes.”
“There's still a lot of wariness of what that long-term impact is going to be.”
“The opportunity to hyper personalize communication and accurately track our members and their impact is here.”
“One route to impact is to have success in American Industry.”
“The longer-term impact is on how we view them in terms of reliability.”
“I am sure, of course, the same happens elsewhere, but in our little islands, the impact is always so much closer to our daily lives.”
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