duplicate

[n., adj. doo-pli-kit, dyoo-; v. doo-pli-keyt, dyoo-]
noun
1.
a copy exactly like an original.
2.
anything corresponding in all respects to something else.
3.
Cards. a duplicate game.
verb (used with object), duplicated, duplicating.
4.
to make an exact copy of.
5.
to do or perform again; repeat: He duplicated his father's way of standing with his hands in his pockets.
6.
to double; make twofold.
verb (used without object), duplicated, duplicating.
7.
to become duplicate.
adjective
8.
exactly like or corresponding to something else: duplicate copies of a letter.
9.
consisting of or existing in two identical or corresponding parts; double.
10.
Cards. noting a game in which each team plays a series of identical hands, the winner being the team making the best total score.
Idioms
11.
in duplicate, in two copies, especially two identical copies: Please type the letter in duplicate.

Origin:
1400–50; late Middle English < Latin duplicātus (past participle of duplicāre to make double), equivalent to duplic- (stem of duplex) duplex + -ātus -ate1

duplicative, adjective
nonduplicating, adjective
nonduplicative, adjective
preduplicate, verb (used with object), preduplicated, preduplicating.
quasi-duplicate, adjective
self-duplicating, adjective
unduplicated, adjective
unduplicative, adjective


1. facsimile, replica, reproduction. 4. See imitate. 9. twofold.


1. original.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
duplicate
 
adj
1.  copied exactly from an original
2.  identical
3.  existing as a pair or in pairs; twofold
 
n
4.  an exact copy; double
5.  something additional or supplementary of the same kind
6.  two exact copies (esp in the phrase in duplicate)
 
vb
7.  (tr) to make a replica of
8.  (tr) to do or make again
9.  (tr) to make in a pair; make double
10.  (intr) biology to reproduce by dividing into two identical parts: the chromosomes duplicated in mitosis
 
[C15: from Latin duplicāre to double, from duo two + plicāre to fold]
 
duplicable
 
adj
 
duplica'bility
 
n
 
'duplicately
 
adv
 
'duplicative
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

duplicate
early 15c., from L. duplicatus, pp. of duplicare "to double," from duo "two" + plicare "to fold" see ply (v.)). The noun is first recorded 1530s. The verb is attested from 1620s. Related: Duplicated; duplicating.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences for duplicates
Because so many people bought for investment purposes, duplicates are common.
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