impingement

from WordNet (r) 3.0 (2006)

impingement
    n 1: influencing strongly; "they resented the impingement of
         American values on European culture" [syn: {impingement},
         {encroachment}, {impact}]
    2: a sharp collision produced by striking or dashing against
       something [syn: {impingement}, {impaction}]

from The Collaborative International Dictionary of English v.0.48

Impingement \Im*pinge"ment\, n.
   The act of impinging.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

75 Moby Thesaurus words for "impingement":
      appulse, attouchement, brunt, brush, bulldozing, bulling, bump,
      cannon, carambole, caress, carom, clash, collision, concussion,
      contact, contingence, crack-up, crash, crump, crunch, encounter,
      encroachment, entrance, entrenchment, glance, graze, hammering,
      impact, impingence, imposition, incursion, infiltration, influx,
      infringement, injection, inroad, insinuation, interference,
      interjection, interloping, interposition, interposure,
      interruption, intervention, intrusion, invasion, irruption, jar,
      jolt, kiss, mauling, meeting, nudge, obtrusion, onslaught,
      osculation, percussion, ramming, rub, shock, sideswipe,
      sledgehammering, smash, smash-up, smashing, taction, tangency,
      tentative contact, thrusting, touch, touching, trespass,
      trespassing, unlawful entry, whomp