du·pli·cate
ˈdü-pli-kət 
also ˈdyü-
1
: consisting of or existing in two corresponding or identical parts or examples
duplicate invoices
2
: being the same as another
duplicate copies
du·pli·cate
ˈdü-pli-ˌkāt
also ˈdyü-
duplicated; duplicating
1
: to make double or twofold
2
a
: 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
: to become duplicated
also
: repeat
du·pli·cate
ˈdü-pli-kət
also ˈdyü-
1
a
: 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
Synonyms
Adjective
Verb
Noun
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
Recent Examples on the Web
Alex Groth, Journal Sentinel, 5 Nov. 2024
The judge found that 365 voters received duplicate ballots and up to 17,000 others may not have received theirs.
—Zach Schonfeld, The Hill, 3 Nov. 2024
Jim Clash, Forbes, 6 Nov. 2024
The first generation of Marvel series for Disney+ essentially duplicated how the studio makes its films, with in-house producers in charge of calling the shots.
—Josef Adalian, Vulture, 4 Nov. 2024
Bob Beacham, Popular Science, 22 Nov. 2024
Integrating data from multiple sources—including ERP and CRM software—into centralized data lakes or warehouses and regularly cleaning it to remove inaccuracies, duplicates, and inconsistencies is also essential.
—Forbes, 5 Nov. 2024
See all Example Sentences for duplicate 
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Adjective
Myth: Double voting is widespread across Wisconsin elections In late September, 2,000 voters were accidentally sent duplicate ballots out of Madison, though a city spokesperson told the Associated Press multiple safeguards were in place to ensure that only one ballot would be counted.
—Alex Groth, Journal Sentinel, 5 Nov. 2024
The judge found that 365 voters received duplicate ballots and up to 17,000 others may not have received theirs.
—Zach Schonfeld, The Hill, 3 Nov. 2024
Verb
This procedure was then duplicated for each of the other air show jets.
—Jim Clash, Forbes, 6 Nov. 2024
The first generation of Marvel series for Disney+ essentially duplicated how the studio makes its films, with in-house producers in charge of calling the shots.
—Josef Adalian, Vulture, 4 Nov. 2024
Noun
The kit offers a couple hundred components, but many of them are duplicates.
—Bob Beacham, Popular Science, 22 Nov. 2024
Integrating data from multiple sources—including ERP and CRM software—into centralized data lakes or warehouses and regularly cleaning it to remove inaccuracies, duplicates, and inconsistencies is also essential.
—Forbes, 5 Nov. 2024
See all Example Sentences for duplicate
Dictionary Entries Near duplicate
Cite this Entry
“Duplicate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duplicate. Accessed 26 Nov. 2024.
Copy CitationKids Definition
duplicate
1 of 3 adjective
du·pli·cate
ˈd(y)ü-pli-kət
1
: having two parts exactly the same or alike
2
: being the same as another
duplicate
2 of 3 verb
du·pli·cate
ˈd(y)ü-pli-ˌkāt
duplicated; duplicating
1
: to make double
2
: to make a duplicate of
duplicate
3 of 3 nounˈd(y)ü-pli-kət
: a thing that is exactly like another
Medical Definition
duplicate
intransitive verb
du·pli·cate
ˈd(y)ü-pli-ˌkāt
duplicated; duplicating
: to become duplicate : replicate
DNA in chromosomes duplicates
Legal Definition
duplicate
1 of 2 transitive verb
du·pli·cate
ˈdü-pli-ˌkāt, ˈdyü-
duplicated; duplicating
: to make a duplicate of
duplicate
2 of 2 noun
du·pli·cate
ˈdü-pli-kət, ˈdyü-
: 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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