Source : Webster's Revised Unabridged Dictionary (1913)

Supervene \Su`per*vene"\, v. i. [imp. & p. p. {Supervened}; p.
   pr. & vb. n. {Supervening}.] [L. supervenire, superventum, to
   come over, to come upon; super over + venire to come. See
   {Super-}, and {Come}, and cf. {Overcome}.]
   To come as something additional or extraneous; to occur with
   reference or relation to something else; to happen upon or
   after something else; to be added; to take place; to happen.

         Such a mutual gravitation can never supervene to matter
         unless impressed by divine power.        --Bentley.

         A tyrany immediately supervened.         --Burke.

Source : WordNet®

supervene
     v : take place as an additional or unexpected development