The Collaborative International Dictionary of English v.0.48:

Finality \Fi*nal"i*ty\, n.; pl. Finalities. [L. finalitas the
   being last.]
   1. The state of being final, finished, or complete; a final
      or conclusive arrangement; a settlement. --Baxter.
      [1913 Webster]

   2. The relation of end or purpose to its means. --Janet.
      [1913 Webster]

WordNet (r) 3.0 (2006):

finality
    n 1: the quality of being final or definitely settled; "the
         finality of death" [syn: finality, conclusiveness,
         decisiveness] [ant: inconclusiveness]