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Definition of duplicate adjective from the Oxford Advanced Learner's Dictionary

duplicate

adjective
 
/ˈdjuːplɪkət/
 
/ˈduːplɪkət/
[only before noun]
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  1. exactly like something else; made as a copy of something else
    • a duplicate invoice
    Word Originlate 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’.
See duplicate in the Oxford Advanced American Dictionary

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