Webster's English Dictionary

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regeneration

re.gen.er.a.tion \ri-.jen-*-'ra--sh*n, .re--\ n 1: an act or the process of 
   regenerating : the state of being regenerated  2: spiritual renewal or 
   revival  3: renewal or restoration of a body or bodily part after injury or 
   as a nor mal process 4: utilization by special devices of heat or other 
   products that would ordi narily be lost