duplicate

adjective
du·​pli·​cate | \ ˈdü-pli-kət How to pronounce duplicate (audio) also ˈdyü-\

Definition of duplicate

 (Entry 1 of 3)

1 : consisting of or existing in two corresponding or identical parts or examples duplicate invoices
2 : being the same as another duplicate copies

duplicate

verb
du·​pli·​cate | \ ˈdü-pli-ˌkāt How to pronounce duplicate (audio) also ˈdyü-\
duplicated; duplicating

Definition of duplicate (Entry 2 of 3)

transitive verb

1 : to make double or twofold
2a : to make a copy of a cell duplicates itself when it divides
b : to produce something equal to trying to duplicate last year's success
c : to do over or again often needlessly duplicated effort

intransitive verb

: to become duplicated also : repeat

duplicate

noun
du·​pli·​cate | \ ˈdü-pli-kət How to pronounce duplicate (audio) also ˈdyü-\

Definition of duplicate (Entry 3 of 3)

1a : either of two things exactly alike and usually produced at the same time or by the same process
b : an additional copy of something (such 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

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Other Words from duplicate

Verb

duplicative \ ˈdü-​pli-​ˌkā-​tiv How to pronounce duplicative (audio) also  ˈdyü-​ \ adjective

Choose the Right Synonym for duplicate

Noun

reproduction, duplicate, copy, facsimile, replica mean a thing made to closely resemble another. reproduction implies an exact or close imitation of an existing thing. reproductions from the museum's furniture collection duplicate implies a double or counterpart exactly corresponding to another thing. a duplicate of a house key copy applies especially to one of a number of things reproduced mechanically. printed 1000 copies of the lithograph facsimile suggests a close reproduction often of graphic matter that may differ in scale. a facsimile of a rare book replica implies the exact reproduction of a particular item in all details a replica of the Mayflower but not always in the same scale. miniature replicas of classic cars

Examples of duplicate in a Sentence

Adjective

I began receiving duplicate copies of the magazine every month. I had a duplicate key made.

Verb

She duplicated the video to give to family and friends. Unfortunately, the results of the first study could not be duplicated.

Noun

In case you lose your keys, keep a set of duplicates somewhere safe. doll carriages that are duplicates of baby carriages
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Recent Examples on the Web: Adjective

The Office of the Attorney General reported a 1,055 percent increase in duplicate tips, where more than one student reported the same concerns. Meg Wingerter, The Denver Post, "Safe2Tell tips about Colorado schools nearly double," 6 June 2019 Mastodon the software will investigate ways to help mods deal with large numbers of duplicate reports and blacklisting reports from dubious sources. Megan Farokhmanesh, The Verge, "Twitter rival Mastodon isn’t safe from online mobs either," 31 Aug. 2018 The displays aren't the only part of the Nubia X that use duplicate components: there are also two fingerprint readers. Ron Amadeo, Ars Technica, "ZTE smartphone goes to extremes to kill the notch, adds rear secondary display," 1 Nov. 2018 Police returned the hat to Richard following the arrest, but the teen also received a duplicate hat -- autographed by President Trump. Stephen Sorace, Fox News, "Man accused of stealing teen's MAGA hat indicted by grand jury," 31 Aug. 2018 Other Twitter users, desperate for validation, endlessly retweet their own tweets, spamming followers with duplicate information. Casey Newton, The Verge, "Why social media is friend to far-right politicians around the world," 30 Oct. 2018 The whole software package is built for one purpose, without duplicate app selections serving different masters. Ron Amadeo, Ars Technica, "Pixel 3 XL review—Google software deserves better than this hardware," 15 Oct. 2018 Facebook's justification for removing problematic accounts—using duplicate profiles, artificially boosting metrics, inflaming political tension to fatten ad revenue—is a tactful one. Sam Blum, Popular Mechanics, "Facebook's Fake News Problem Isn't Russian Anymore—It's Homegrown," 12 Oct. 2018 Her campaign also submitted three duplicate signatures. Daniel Bice, Milwaukee Journal Sentinel, "Watertown police investigate allegations candidate forged signatures on nomination papers," 5 June 2018

Recent Examples on the Web: Verb

The emergence of angiosperms was marked by many events in which lineages of plants duplicated their whole genome. Quanta Magazine, "With ‘Downsized’ DNA, Flowering Plants Took Over the World," 16 June 2019 With multiple locations, the possibility exists that duplicate recordings or flat lays exist for at least some of the songs. Rosy Cordero, EW.com, "Master recordings from Tupac, Elton John, Eminem among possible casualties of 2008 fire," 12 June 2019 Demanding that Rask duplicate his predecessor is an unrealistic and unfair standard. Globe Staff, BostonGlobe.com, "Tuukka Rask has a chance to write a happy ending," 8 June 2019 Blocks of wood in various shapes and sizes duplicating hand- and footholds found on real mountains are attached to the plywood surface. Kevin Dupzyk, Popular Mechanics, "The Biggest Ice-Climbing Wall in American History," 23 Feb. 2019 Georgia Southern has the ingredients to once again be one of the top teams in the Sun Belt, but there were some player departures along with lucky breaks in 2018 that may be hard to duplicate during the upcoming season. Iliana Limón Romero, orlandosentinel.com, "2019 College Football Rankings: No. 82 Georgia Southern works to build on success," 4 June 2019 Scientists have duplicated several of these scents and used them to bait special traps for luring the target insect. The Editors Of Organic Life, Good Housekeeping, "The 7 Best Organic Pest Control Techniques For Your Garden," 18 Dec. 2017 Still, Broce maintained the secretary of state's office was unable to duplicate ProPublica's efforts. Cyrus Farivar, Ars Technica, "With no evidence, Georgia’s top voting official accuses Dems of “cyberattack”," 5 Nov. 2018 But Russell has been unable to duplicate his production from 2016. Fox News, "Chicago Cubs shortstop Addison Russell placed on leave after domestic violence claims," 22 Sep. 2018

Recent Examples on the Web: Noun

Have a duplicate set of key documents stored safely away from the originals. Susan Tompor, Detroit Free Press, "Trump tax reform: Don't expect big tax break on losses from flooding, storms," 5 June 2019 And your friends could soon find a perfect duplicate of that cute-as-a-button ferret or that feisty Sahara monitor lizard waiting under the Christmas tree. Joe Queenan, WSJ, "The Promise of Cloning: Are Pets Better the Second Time Around?," 9 Mar. 2018 Meanwhile the UK’s local drone industry has struggled, with Thales’ Watchkeeper drone—pretty much a duplicate of the late 1990s tech MQ-1 Predator drone—five years behind schedule. Kyle Mizokami, Popular Mechanics, "The U.K. Promises to Develop Drone Swarms, But on an Unrealistic Timetable," 12 Feb. 2019 Making the duplicate accounts turned out to be a breeze. Jack Nicas, New York Times, "Oprah, Is That You? On Social Media, the Answer Is Often No.," 7 July 2018 Democrats say this won’t result in voter fraud, but automatic registration will inevitably register thousands who aren’t eligible or produce duplicate registrations based on faulty government data. The Editorial Board, WSJ, "Majority Preservation Act," 7 Jan. 2019 Amazon says that this could help people avoid requesting the same item on different lists and ending up receiving duplicate gifts. Shannon Liao, The Verge, "Anyone with an Amazon account can now make a collaborative wish list," 24 Aug. 2018 The list contains several entries that may be duplicates with different spellings. Janie Har, The Seattle Times, "AP Explains: The hunt for missing, dead in California fire," 21 Nov. 2018 This would reduce duplicate registrations and help clean up voter rolls. Madeline Marshall, Vox, "Why America needs automatic voter registration," 7 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'duplicate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of duplicate

Adjective

15th century, in the meaning defined at sense 1

Verb

15th century, in the meaning defined at transitive sense 1

Noun

1532, in the meaning defined at sense 1a

History and Etymology for duplicate

Adjective

Middle English, from Latin duplicatus, past participle of duplicare to double, from duplic-, duplex

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Statistics for duplicate

Last Updated

20 Jun 2019

Look-up Popularity

Time Traveler for duplicate

The first known use of duplicate was in the 15th century

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More Definitions for duplicate

duplicate

adjective

English Language Learners Definition of duplicate

 (Entry 1 of 3)

: exactly the same as something else : made as an exact copy of something else

duplicate

verb

English Language Learners Definition of duplicate (Entry 2 of 3)

: to make an exact copy of (something)
: to produce (something) in another form

duplicate

noun

English Language Learners Definition of duplicate (Entry 3 of 3)

: something that is exactly the same as something else : an exact copy of something else

duplicate

adjective
du·​pli·​cate | \ ˈdü-pli-kət How to pronounce duplicate (audio) , ˈdyü-\

Kids Definition of duplicate

 (Entry 1 of 3)

: exactly the same as another duplicate copies

duplicate

verb
du·​pli·​cate | \ ˈdü-pli-ˌkāt How to pronounce duplicate (audio) , ˈdyü-\
duplicated; duplicating

Kids Definition of duplicate (Entry 2 of 3)

: to make an exact copy of

duplicate

noun
du·​pli·​cate | \ ˈdü-pli-kət How to pronounce duplicate (audio) , ˈdyü-\

Kids Definition of duplicate (Entry 3 of 3)

: a thing that is exactly like another

duplicate

intransitive verb
du·​pli·​cate | \ ˈd(y)ü-pli-ˌkāt How to pronounce duplicate (audio) \
duplicated; duplicating

Medical Definition of duplicate

: to become duplicate : replicate DNA in chromosomes duplicates

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duplicate

transitive verb
du·​pli·​cate | \ ˈdü-pli-ˌkāt, ˈdyü- How to pronounce duplicate (audio) \
duplicated; duplicating

Legal Definition of duplicate

 (Entry 1 of 2)

: to make a duplicate of

Other Words from duplicate

duplicative \ -​ˌkā-​tiv How to pronounce duplicative (audio) \ adjective

duplicate

noun
du·​pli·​cate | \ ˈdü-pli-kət, ˈdyü- How to pronounce duplicate (audio) \

Legal Definition of duplicate (Entry 2 of 2)

: either of two things exactly alike and often produced at the same time specifically : a counterpart identified in the Federal Rules of Evidence Rule 1001 as produced by the same impression as the original or from the same matrix or by means of photography, mechanical, or electronic rerecording, chemical reproduction, or another technique which accurately reproduces the original — compare original

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