[qua.dru.pli.cate] adj [L quadruplicatus, pp. of quadruplicare to quadruple, fr. quadruplic-, quadruplex fourfold, fr. quadri- + -plic-, -plex fold--more at -fold] (1657) 1: consisting of or existing in four corresponding or identical parts or examples "~ invoices"
2: being the fourth of four things exactly alike
[2]qua.dru.pli.cate vt -cat.ed ; -cat.ing (ca. 1661) 1: to make quadruple or fourfold
2: to prepare in quadruplicate -- qua.dru.pli.ca.tion n [3]qua.dru.pli.cate n (1790) 1: four copies all alike--used with in "typed in ~"
2: one of four things exactly alike; specif: one of four identical copies