Source : Webster's Revised Unabridged Dictionary (1913)

Recurrence \Re*cur"rence\ (r?*k?r"rens), Recurrency
\Re*cur"ren*cy\ (-ren*s?), n. [Cf. F. r['e]currence.]
   The act of recurring, or state of being recurrent; return;
   resort; recourse.

         I shall insensibly go on from a rare to a frequent
         recurrence to the dangerous preparations. --I. Taylor.

Source : WordNet®

recurrence
     n : happening again (especially at regular intervals); "the
         return of spring" [syn: {return}]