Main Entry: ¹du·pli·cate

Pronunciation: \ˈdü-pli-kət also ˈdyü-\

Function: adjective

Etymology: Middle English, from Latin duplicatus, past participle of duplicare to double, from duplic-, duplex

Date: 15th century

1 : consisting of or existing in two corresponding or identical parts or examples <duplicate invoices>
2 : being the same as another <duplicate copies>