regeneration

[rəˌjenəˈrāSH(ə)n]NOUNthe action or process of regenerating or being regenerated, in particular the formation of new animal or plant tissue.synonyms:renewal · revival · recovery · rally · upturn · comeback · reinvigoration · reawakening · resurrection · reappearance · re-emergence · rejuvenation · new birth · rebirth. http://www.freedictionary.com