verb , adjective , noun
■ verb / ˈdjuːplɪkeɪt; NAmE ˈduː-/ [ vn ]
1.
[ often passive ] to make an exact copy of sth :
a duplicated form
2.
to do sth again, especially when it is unnecessary :
There's no point in duplicating work already done.
► du·pli·ca·tion / ˌdjuːplɪˈkeɪʃn; NAmE ˌduː-/ noun [ U , C ]
■ adjective
/ ˈdjuːplɪkət; NAmE ˈduː-/ [ only before noun ] exactly like sth else; made as a copy of sth else :
a duplicate invoice
■ noun
/ˈdjuːplɪkət; NAmE ˈduː-/ one of two or more things that are the same in every detail
SYN copy :
Is this a duplicate or the original?
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IDIOMS
- in duplicate
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WORD ORIGIN
late Middle English (in the sense having two corresponding parts ): from Latin duplicat- doubled, from the verb duplicare , from duplic- twofold, from duo two + plicare to fold.