duplicate

adjective
du·​pli·​cate | \ˈdü-pli-kət 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 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 | \-kət \

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 \-​ˌkā-​tiv \ 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

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 The earlier issue with duplicate transactions has been resolved. Jordan Cutler-tietjen, sacbee, "Wells Fargo apologizes after customers see double charges and transaction problems," 16 June 2018 That estimate does not include duplicate accounts, which users sometimes create by accident or to have separate professional and personal profiles. The Washington Post, OregonLive.com, "Facebook's crackdown on fake accounts isn't working for everyone," 5 May 2018 Voatz says its technology prevents duplicate votes in the same way a bitcoin can’t be duplicated. Andy Rosen, BostonGlobe.com, "Will blockchain change the way we buy everything, and even the way we vote?," 12 June 2018 Created by Justin Marks, Starz's Counterpart, which premiered Dec. 10, sees Simmons' Howard (the mild one) uncover a world where duplicate versions of every person on Earth are living different lives. Rebecca Ford, The Hollywood Reporter, "'Counterpart's' J.K. Simmons, Justin Marks on Challenges of One Actor in Dual Roles," 11 June 2018

Recent Examples on the Web: Verb

The Holiday Calendar comes as part of Netflix’s apparent holiday strategy of duplicating the Hallmark Christmas movie template in as many movies as possible in the wake of last year’s A Christmas Prince and its runaway, semi-ironic success. Constance Grady, Vox, "The Holiday Calendar is Netflix’s latest stab at the Hallmark Christmas movie template. It’s … fine.," 2 Nov. 2018 Neither number tells a complete story, because SPD’s data does not include investigations that are still active and 911 calls may include duplicate calls for the same incidents. Heidi Groover, The Seattle Times, "Neighborhood concerns and increased patrols follow string of Central District shootings," 20 Sep. 2018 Company President Hernan Luis y Prado, 47, a former Navy hospital corpsman, founded the training program in 2008 with the hope of growing it to 1,500 manufacturing specialists per year and duplicating the program across the country. Roger Showley, sandiegouniontribune.com, "Expect some pain before gain in trade war, says Trump's SBA chief," 20 June 2018 And the thing about medians is, LA has a few of them: The city can duplicate this project wherever the soils are permeable enough to accept water. Matt Simon, WIRED, "LA Is Doing Water Better Than Your City. Yes, That LA," 12 June 2018 Instead, the Pelicans are stuck trying to fill in the gaps, as always, and left to pray that Davis and the resurgent Holiday can duplicate their outstanding 2018 campaigns in an even tougher Western Conference. Ben Golliver, SI.com, "2018 NBA Free Agency: The Early Winners And Losers," 5 July 2018 This study was designed to help the majors understand and duplicate the success of independent black labels like Motown and Stax. Gail Mitchell, Billboard, "Music Industry Veteran David Linton Talks Black Executive Inclusion: 'Let's Get It Right This Time'," 1 June 2018 His ability to creatively dribble the basketball is so singular that The Boston Globe found last year that video game makers had trouble duplicating it. New York Times, "Kyrie Irving Doesn’t Know if the Earth Is Round or Flat. He Does Want to Discuss It.," 8 June 2018 Vaccarello has the ability, perhaps more than anyone in his position in recent memory who's tried, to revisit themes that have defined the house—animal prints, Marrakech, all manner of embroidery—without simply duplicating them. Matt Sebra, GQ, "Watch Saint Laurent's Epic New York City Fashion Show Right Here," 6 June 2018

Recent Examples on the Web: Noun

Prosecutors said between May 2014 and April 2015, the three culprits stole patron’s card information and created duplicates to rake in more than $420,000. Bradford Betz, Fox News, "Key witness in casino fraud case found dead in creek," 13 Sep. 2018 Its duplicate just arrived here and is stored in a Vashon warehouse. Erik Lacitis, The Seattle Times, "‘Baby Trump’ blimp arrives on Vashon Island," 20 Aug. 2018 The immediate view of the fading façades of palazzos and the domes of Santa Maria della Salute against a pale blue sky is a near duplicate of a Canaletto painting. Jean Bond Rafferty, Town & Country, "Dispatches from the Renaissance," 17 Dec. 2012 As Blue lies lifeless, a duplicate — Blue's ghost! — rises from behind and floats toward heaven before a blue dove pulls it back and reconnects the two, body and spirit. Bill Keveney, USA TODAY, "Exclusive: Watch glowing 'AGT' duo explode into colorful sparks in tonight's audition," 19 June 2018 The complaint by the American Civil Liberties Union of Kansas alleges ‘‘reckless maintenance’’ of the Interstate Voter Registration Crosscheck Program, which compares voter registration lists among participating states to look for duplicates. Roxana Hegeman, BostonGlobe.com, "Lawsuit claims Kansas official exposed private voter data," 20 June 2018 In an open area to the side of the pavilion lie duplicates of all the inscribed monuments. New York Times, "A Memorial to the Lingering Horror of Lynching," 1 June 2018 Most automakers operate a single line to make two, three or sometimes four different vehicles, because using a second line would force them to invest in duplicate tooling and cut into profit margins. Neal E. Boudette, New York Times, "Can Elon Musk and Tesla Reinvent the Way Cars Are Made?," 30 June 2018 Three-fourths of these exposures were in children aged 12 or younger, most commonly as a result of a medication administration error, such as a duplicate dose. Philly.com, "The dangers of misusing ADHD medications," 25 June 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

21 Nov 2018

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, ˈdyü-\

Kids Definition of duplicate

 (Entry 1 of 3)

: exactly the same as another duplicate copies

duplicate

verb
du·​pli·​cate | \ˈdü-pli-ˌkāt, 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, 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 \
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- \
duplicated; duplicating

Legal Definition of duplicate 

(Entry 1 of 2)

: to make a duplicate of

Other Words from duplicate

duplicative \-​ˌkā-​tiv \ adjective

duplicate

noun
du·​pli·​cate | \ˈdü-pli-kət, ˈdyü- \

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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