Webster's English Dictionary

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inflammation

in.flam.ma.tion \.in-fl*-'ma--sh*n\ n 1: the act of inflaming : the state 
   of being inflamed  2: a local response to cellular injury marked by 
   capillary dilatation, leuk ocytic infiltration, redness, heat, and pain 
   that serves as a mechanism initiating the elimination of noxious agents and 
   of damaged tissue