The Collaborative International Dictionary of English v.0.48:

Instauration \In`stau*ra"tion\, n. [L. instauratio: cf. F.
   instauration.]
   Restoration after decay, lapse, or dilapidation; renewal;
   repair; renovation; renaissance.
   [1913 Webster]

         Some great catastrophe or . . . instauration. --T.
                                                  Burnet.
   [1913 Webster]

WordNet (r) 3.0 (2006):

instauration
    n 1: the act of starting something for the first time;
         introducing something new; "she looked forward to her
         initiation as an adult"; "the foundation of a new
         scientific society" [syn: initiation, founding,
         foundation, institution, origination, creation,
         innovation, introduction, instauration]