Main Entry: ¹qua·dru·pli·cate

Pronunciation: \kwä-ˈdrü-pli-kət\

Function: adjective

Etymology: Latin quadruplicatus, past participle of quadruplicare to quadruple, from quadruplic-, quadruplex fourfold, from quadri- + -plic-, -plex fold — more at -fold

Date: 1656

1 : consisting of or existing in four corresponding or identical parts or examples <quadruplicate invoices>
2 : being the fourth of four things exactly alike