The Collaborative International Dictionary of English v.0.48:

Indetermination \In`de*ter`mi*na"tion\, n. [Pref. in- not +
   determination: cf. ind['e]termination.]
   [1913 Webster]
   1. Lack of determination; an unsettled or wavering state, as
      of the mind. --Jer. Taylor.
      [1913 Webster]

   2. Lack of fixed or stated direction. --Abp. Bramhall.
      [1913 Webster]

WordNet (r) 3.0 (2006):

indetermination
    n 1: the quality of being vague and poorly defined [syn:
         indefiniteness, indeterminateness, indefinity,
         indetermination, indeterminacy]