Webster’s Revised Unabridged Dictionary · 1913
Recurrence
Re·cur′rence (r?·k?r′rens), Re·cur′ren·cy (-ren·s?), n. [Cf. F. récurrence.] 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.