Source : Webster's Revised Unabridged Dictionary (1913)

Duplication \Du`pli*ca"tion\, n. [L. duplicatio: cf. F.
   duplication.]
   1. The act of duplicating, or the state of being duplicated;
      a doubling; a folding over; a fold.

   2. (Biol.) The act or process of dividing by natural growth
      or spontaneous action; as, the duplication of cartilage
      cells. --Carpenter.

   {Duplication of the cube} (Math.), the operation of finding a
      cube having a volume which is double that of a given cube.

Source : WordNet®

duplication
     n 1: a copy that corresponds to an original exactly; "he made a
          duplicate for the files" [syn: {duplicate}]
     2: the act of copying or making a duplicate (or duplicates) of
        something; "this kind of duplication is wasteful" [syn: {gemination}]