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English definition of “duplicate”

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duplicate

verb [T] uk   /ˈdjuː.plɪ.keɪt/ us    /ˈduː-/
to make an exact copy of something: The documents had been duplicated. Parenthood is an experience nothing else can duplicate.

duplicate

adjective [before noun] uk   /ˈdjuː.plɪ.kət/ us    /ˈduː-/
being an exact copy of something: The thieves were equipped with duplicate keys to the safe.

duplicate

noun [C] uk   /ˈdjuː.plɪ.kət/ us    /ˈduː-/
something that is an exact copy of something else: I lost the original form so they sent me a duplicate.
in duplicate If a form is in duplicate, an exact copy has been made of it: The application has to be completed in duplicate.
(Definition of duplicate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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