• WordNet 3.6
    • v impact have an effect upon "Will the new rules affect me?"
    • v impact press or wedge together; pack together
    • n impact influencing strongly "they resented the impingement of American values on European culture"
    • n impact the violent interaction of individuals or groups entering into combat "the armies met in the shock of battle"
    • n impact the striking of one body against another
    • n impact a forceful consequence; a strong effect "the book had an important impact on my thinking","the book packs a wallop"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: When the Galileo Probe entered Jupiter's atmosphere, it was traveling at a speed of 106,000 miles per hour. This is the fastest impact speed ever achieved by a man-made object.
    • Impact Contact or impression by touch; collision; forcible contact; force communicated. "The quarrel, by that impact driven."
    • Impact (Mech) The single instantaneous stroke of a body in motion against another either in motion or at rest.
    • Impact To affect or influence, especially in a significant or undesirable manner; as, budget cuts impacted the entire research program; the fish populations were adversely impacted by pollution.
    • Impact To collide forcefully with; to strike.
    • Impact To drive close; to press firmly together: to wedge into a place.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: A squash ball moving at 150 kilometers per hour has the same impact of a .22 bullet
    • impact To drive close; press closely or firmly; pack in.
    • n impact The act of striking against something; a blow; a stroke.
    • n impact 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 impact In gunnery, the single blow of a projectile against a fixed or moving object.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Impact im-pakt′ to press firmly together: to drive close
    • n Impact a striking against: collision: the blow of a body in motion impinging on another body: the impulse resulting from collision
    • ***


  • John H. Holcomb
    John H. Holcomb
    “You must get involved to have an impact. No one is impressed with the won-lost record of the referee.”
  • Mal Pancoast
    “You get paid to impact the world, not be impacted by it.”
  • Walter Bagehot
    “Conquest is the missionary of valor, and the hard impact of military virtues beats meanness out of the world.”
  • P. W. Bridgman
    P. W. Bridgman
    “There is no adequate defense, except stupidity, against the impact of a new idea.”
  • Jim Rohn
    “Get around people who have something of value to share with you. Their impact will continue to have a significant effect on your life long they have departed.”
  • Dan Quayle
    “People that are really weird can get into sensitive positions and have a tremendous impact on history.”


Webster's Revised Unabridged Dictionary
L. impactus, p. p. of impingere, to push, strike against. See Impinge
Chambers's Twentieth Century Dictionary
O. Fr. impacter—L. impactus, pa.p. of impingēre. See Impinge.


In literature:

Each of these planes carries its own particular impact of light or shadow.
"Plum Pudding" by Christopher Morley
The impact was more than Austria could stand.
"Notable Events of the Nineteenth Century" by Various
Then there was a rushing sound, a tremendous impact in front of them and something huge bounded and bounded again among the bushes.
"The Texan Star" by Joseph A. Altsheler
Imagine the intense thrill that sweeps over his frame at the impact.
"Miss Caprice" by St. George Rathborne
It flew outwards with a crash, the force of my impact being such that the lock tore a great piece out of the jamb.
"Humphrey Bold" by Herbert Strang
The violent impact of his body bore his victim, cursing, to the ground.
"Diane of the Green Van" by Leona Dalrymple
There was the sound of a heavy impact.
"The Gun-Brand" by James B. Hendryx
This is an almost universal experience among thousands of young people in their first impact with the industrial world.
"The Spirit of Youth and the City Streets" by Jane Addams
There was no possibility that in his then condition Jan could withstand the shock of that furious impact.
"Jan" by A. J. Dawson
Then, without the usual warning, there was a roar that seemed to split our heads and an impact that sent us reeling backwards against the wall.
"Combed Out" by Fritz August Voigt

In poetry:

Still sway the mad crowds to and fro!
I hear their groans and panting breath,
The hideous impacts, blow on blow,
The moans of those who are crushed to death!
"Out Of the Ranks" by John Lawson Stoddard
Why have they come to us from far off Albion?
What do they want? A distant booming sound -
And suddenly, the sea below the bastion
Rose boiling with the impact of the round.
"The Lieutenant" by Konstantin Simonov

In news:

Forcefield products feature multi-impact characteristics, breathable materials and three-dimensional moulding characteristics.
Considering coach Gary Pinkel had never started a true freshman on the O-line during his 12-year tenure at Missouri, that pretty much speaks to Boehm 's impact.
Boehm , Green-Beckham make quick impact for MU.
For over 35 years, Boehm 's innovations and leadership have profoundly impacted systems and software developers as well as organizational leaders and policy makers in both the commercial and government defense sectors.
Now's your chance to ask Stewart about launching your own company, how the market turmoil has impacted her empire, and what's next for the titan of homemaking.
Most of the people who have a profound impact on this world do so quietly.
Its one week until election day and Hurricane Sandy has impacted the campaigns.
When she played at Murray County Central High School, Emily Bose always found a way to make an impact, finishing her high school career with 2,068 points, 1,166 rebounds and 506 blocks.
When she played at Murray County Central High School, Emily Bose always found a way to make an impact, finishing her high school career with 2,068 points, 1,166 rebounds and 506 block.
New NAACP analysis pinpoints disproportionate impact from coal-fired power plants on minorities and the poor.
Impact Bourn is seeking a multi-year deal and will join a market of free agent center fielders that includes Josh Hamilton and B.J.
7 pm game against the Montreal Impact.
How do your programs and services impact the lives of your clients.
236 local jobs to be impacted by BPI closure.
Bulging campaign coffers give Maryland congressmen impact.

In science:

Therefore we want to study in the present paper whether there is a Gribov problem for Ashtekar connections as well and, if necessary, study its impact.
On the Gribov Problem for Generalized Connections
Assumed ∆m/m is ruled by the probability distribution of the impact parameter b, it is simple to reproduce in this way the LLF’s observed asymptotic shape at the high luminosities.
High-Redshift Galaxies: The Far-Infrared and Sub-Millimeter View
How such large wavefunctions interact when scattered at an impact parameter which is fixed as N becomes large is a puzzle which must be better understood if we are to develop a deeper understanding of matrix theory as a model of quantum gravity.
M(atrix) Theory: Matrix Quantum Mechanics as a Fundamental Theory
One important area of research on which matrix theory has had significant impact is the ongoing study of supersymmetric nonrenormalization theorems in quantum field theories.
M(atrix) Theory: Matrix Quantum Mechanics as a Fundamental Theory
During this ≈ 30 ks the background was ≈ 2 times higher, but this has had little impact on the analysis or results presented here.
The Chandra Deep Survey of the Hubble Deep Field North Area. IV. An Ultradeep Image of the HDF-N