Source : Webster's Revised Unabridged Dictionary (1913)

Reminiscence \Rem`i*nis"cence\ (r?m`?-n?s"sens), n. [F.
   r['e]miniscence, L. reminiscentia.]
   1. The act or power of recalling past experience; the state
      of being reminiscent; remembrance; memory.

            The other part of memory, called reminiscence, which
            is the retrieving of a thing at present forgot, or
            but confusedly remembered.            --South.

            I forgive your want of reminiscence, since it is
            long since I saw you.                 --Sir W.
                                                  Scott.

   2. That which is remembered, or recalled to mind; a statement
      or narration of remembered experience; a recollection; as,
      pleasing or painful reminiscences.

   Syn: Remembrance; recollection. See {Memory}.

Source : WordNet®

reminiscence
     n 1: a mental impression retained and recalled from the past
     2: the process of remembering (especially the process of
        recovering information by mental effort); "he has total
        recall of the episode" [syn: {recall}, {recollection}]