[du.pli.cate] adj [ME, fr. L duplicatus, pp. of duplicare to double, fr. duplic-, duplex] (15c) 1: consisting of or existing in two corresponding or identical parts or examples "~ invoices"
2: being the same as another "~ copies"
[2]du.pli.cate vb -cat.ed ; -cat.ing vt (15c) 1: to make double or twofold
2. a: to make a copy of "a cell ~s itself when it divides" b: to produce something equal to "trying to ~ last year's success" c: to do over or again often needlessly "duplicated effort" ~ vi: to become duplicated; also: repeat -- du.pli.ca.tive adj [3]du.pli.cate n (1532) 1 a: either of two things exactly alike and usu. produced at the same time or by the same process b: an additional copy of something (as a book or stamp) already in a collection
2: one that resembles or corresponds to another: counterpart
3: two identical copies--used in the phrase in duplicate syn see reproduction