DUPLICATE

I. adjective Etymology: Middle English, from Latin duplicatus, past participle of duplicare to double, from duplic-, duplex Date: 15th century consisting of or existing in two corresponding or identical parts or examples , being the same as another , II. verb (-cated; -cating) Date: 15th century transitive verb to make double or twofold, 2. to make a copy of , to produce something equal to , to do over or again often needlessly , intransitive verb to become ~d, duplicative adjective III. noun Date: 1532 1. either of two things exactly alike and usually produced at the same time or by the same process, an additional copy of something (as a book or stamp) already in a collection, one that resembles or corresponds to another ; counterpart , two identical copies, see: reproduction