The Collaborative International Dictionary of English v.0.48:

Predominate \Pre*dom"i*nate\, v. i. [imp. & p. p.
   Predominated; p. pr. & vb. n. Predominating.] [Pref. pre-
   + dominate: cf. F. pr['e]dominer.]
   To be superior in number, strength, influence, or authority;
   to have controlling power or influence; to prevail; to rule;
   to have the mastery; as, love predominated in her heart.
   [1913 Webster]

         [Certain] rays may predominate over the rest. --Sir. I.
                                                  Newton.
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