[quin.tu.pli.cate] adj [ML quintuplicatus, pp. of quintuplicare to quintuple, fr. quintuplus quintuple] (1656) 1: consisting of or existing in five corresponding or identical parts or examples "~ invoices"
2: being the fifth of five things exactly alike "file the ~ copy"
[2]quintuplicate n (1851) 1: one of five things exactly alike; specif: one of five identical copies
2: five copies all alike--used with in "typed in ~" [3]quin.tu.pli.cate vt -cat.ed ; -cat.ing (ca. 1890) 1: to make quintuple or fivefold
2: to prepare in quintuplicate