Definition of duplicating:
(adj) :
Being the same as another; identical, often having been copied from an original.
(v) :
(transitive) To make a copy of.
(n) :
One that resembles or corresponds to another; an identical copy.
(v) :
(transitive) To produce something equal to.
(v) :
(transitive) To do repeatedly; to do again.
(adj) :
(games) In which the hands of cards, tiles, etc. are preserved between rounds to be played again by other players.