The Collaborative International Dictionary of English v.0.48:

Impact \Im*pact"\, v. t. [imp. & p. p. Impacted; p. pr. & vb.
   n. Impacting.] [L. impactus, p. p. of impingere to push,
   strike against. See Impinge.]
   1. To drive close; to press firmly together: to wedge into a
      place. --Woodward.
      [1913 Webster]

   2. 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.
      [PJC]

   3. To collide forcefully with; to strike.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Impact \Im"pact\, n.
   1. Contact or impression by touch; collision; forcible
      contact; force communicated.
      [1913 Webster]

            The quarrel, by that impact driven.   --Southey.
      [1913 Webster]

   2. (Mech.) The single instantaneous stroke of a body in
      motion against another either in motion or at rest.
      [1913 Webster]

WordNet (r) 3.0 (2006):

impact
    n 1: the striking of one body against another
    2: a forceful consequence; a strong effect; "the book had an
       important impact on my thinking"; "the book packs a wallop"
       [syn: impact, wallop]
    3: influencing strongly; "they resented the impingement of
       American values on European culture" [syn: impingement,
       encroachment, impact]
    4: the violent interaction of individuals or groups entering
       into combat; "the armies met in the shock of battle" [syn:
       shock, impact]
    v 1: press or wedge together; pack together
    2: have an effect upon; "Will the new rules affect me?" [syn:
       affect, impact, bear upon, bear on, touch on,
       touch]

Moby Thesaurus II by Grady Ward, 1.0:

196 Moby Thesaurus words for "impact":
   affect, affective meaning, altitude peak, appulse,
   automatic control, backlash, backwash, bearing, bed, blast-off,
   blow, bounce, brunt, buffet, bulldozing, bulling, bump, bumping,
   burden, burn, burnout, cannon, carambole, carom, ceiling, change,
   clash, clout, colliding, collision, coloring, concussion, confirm,
   connotation, consequence, consequences, contact, crack-up, cram in,
   crash, crashing, crowd in, crump, crunch, deep-dye, define,
   denotation, descent, drift, drive in, effect, embed, encounter,
   end of burning, engraft, engrave, entrench, essence, establish,
   etch, extension, fix, flight, force, force in, found, gist,
   grammatical meaning, ground, hammering, hit, idea, ignition,
   impingement, implant, implication, import, impress, impression,
   imprint, infix, influence, ingrain, inscribe, intension, jam,
   jam in, jar, jolt, jounce, knock in, launch, lexical meaning,
   lift-off, literal meaning, lodge, mark, mauling, meaning, meeting,
   modify, onslaught, overtone, pack, pack in, percussion, pertinence,
   pith, plant, plunge in, point, poke in, pound, pound in,
   practical consequence, press in, print, punch, purport, push in,
   quake, quiver, ram in, ramming, range of meaning, rap, reaction,
   real meaning, recoil, reference, referent, reflex, relation,
   relevance, repercussion, response, results, rock, rocket launching,
   root, run in, scope, seat, semantic cluster, semantic field, sense,
   set, set in, settle, shake, shock, shoot, shot, sideswipe,
   significance, signification, significatum, signifie, slap,
   sledgehammering, smash, smash-up, smashing, span of meaning,
   spirit, squeeze in, stamp, stereotype, strike, striking, stroke,
   structural meaning, stuff in, substance, sum, sum and substance,
   symbolic meaning, tamp in, tenor, thrust, thrust in, thrusting,
   totality of associations, trajectory, transferred meaning, tremble,
   tremor, unadorned meaning, undertone, value, velocity peak, wallop,
   wedge, wedge in, weight, whomp



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

IMPACT
       Information Market Policy ACTions (ECHO)


U.S. Gazetteer Places (2000):

Impact, TX -- U.S. town in Texas
   Population (2000):    39
   Housing Units (2000): 16
   Land area (2000):     0.086631 sq. miles (0.224374 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.086631 sq. miles (0.224374 sq. km)
   FIPS code:            35816
   Located within:       Texas (TX), FIPS 48
   Location:             32.500573 N, 99.744790 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Impact, TX
    Impact