A device that reproduces something, such as printed documents or compact discs; a copier.

plural of duplicator

In a duplicate manner

plural of duplicant

In a duplicative manner

The quality of being duplicable.

plural of duplicity

Something or someone which duplicates something else; a duplicate.

Being the same as another; identical, often having been copied from an original. / (games) In which the hands of cards, tiles, etc. are preserved between rounds to be played again by other players.

(transitive) To make a copy of. / (transitive) To do repeatedly; to do again. / (transitive) To produce something equal to.