Source : Webster's Revised Unabridged Dictionary (1913)

Feasibility \Fea"si*bil*ity\n.; pl. {Feasibilities} (-tiz).
   [from {Feasible}]
   The quality of being feasible; practicability; also, that
   which is feasible; as, before we adopt a plan, let us
   consider its feasibility.

         Men often swallow falsities for truths, dubiosities for
         certainties, possibilities for feasibilities. --Sir T.
                                                  Browne.