[1] : The Collaborative International Dictionary of English v.0.48

impact \impact"\, 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
see also:
impacted impacting impinge 

[2] : The Collaborative International Dictionary of English v.0.48

impacted \impact"ed\, a.
   1. driven together or close.
      1913 webster

   2. specifically: dentistry grown in an abnormal direction
      so that it is wedged against another tooth and cannot
      erupt normally; -- of teeth, especially the third molar;
      as, to extract an impacted third molar.
      pjc

   impacted fracture surg., a fracture in which the
      fragments are driven into each other so as to be
      immovable.
      1913 webster
see also:
impacted fracture 

[3] : WordNet (r) 2.0

impacted
     adj : wedged or packed in together; "an impacted tooth" syn: wedged
see also:
wedged 

Impacted >> I Words
Impacted, definition of term: Impacted
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