Source : Webster's Revised Unabridged Dictionary (1913)

Frequence \Fre"quence\, n. [See {Frequency}.]
   1. A crowd; a throng; a concourse. [Archaic.] --Tennyson.

   2. Frequency; abundance. [R.] --Bp. Hall.

Source : WordNet®

frequence
     n : the number of occurrences within a given time period
         (usually 1 second); "the frequency of modulation was 40
         cycles per second" [syn: {frequency}, {oftenness}]