The Collaborative International Dictionary of English v.0.48:

Omnipotence \Om*nip"o*tence\, Omnipotency \Om*nip"o*ten*cy\, n.
   [L. omnipotentia: cf. F. omnipotence.]
   1. The state of being omnipotent; almighty power; hence, one
      who is omnipotent; the Deity.
      [1913 Webster]

            Will Omnipotence neglect to save
            The suffering virtue of the wise and brave? --Pope.
      [1913 Webster]

   2. Unlimited power of a particular kind; as, love's
      omnipotence. --Denham.
      [1913 Webster]

WordNet (r) 3.0 (2006):

omnipotence
    n 1: the state of being omnipotent; having unlimited power

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "omnipotence":
   all-powerfulness, almightiness, eternity, glory, holiness,
   immutability, infinite goodness, infinite justice, infinite love,
   infinite mercy, infinite power, infinite wisdom, infinity, light,
   majesty, omnipotency, omnipresence, omniscience, omnisciency,
   sovereignty, ubiquity, unity