duplication
noun
du·pli·ca·tion
ˌdü-pli-ˈkā-shən 
also ˌdyü-
1
a
: the act or process of duplicating
b
: the quality or state of being duplicated
2
3
: a part of a chromosome in which the genetic material is repeated
also
: the process of forming a duplication
Examples of duplication in a Sentence
He sent the manuscript out for duplication.
Please eliminate duplication when combining the lists.
Recent Examples on the Web
The gene duplication event that doubled the photosystems, allowing one copy to evolve a novel process, happened so long ago that any evidence of that first photosystem has been buried by extinction and billions of years of change.
—
Quanta Magazine, 10 June 2026
There had been ruinous duplication of lines, and much of the construction boom had been concentrated in thinly populated states like Michigan, Illinois, Indiana, and Wisconsin—regions unlikely to generate the passenger and freight traffic needed for profitability.
—Fortune, 2 June 2026
Without someone responsible for seeing the bigger picture, there's a risk in duplication of services, misalignment of goals and the potential loss of funding from organizations and grantors that want to see a macro approach to an issue.
—Taryn Palumbo, Forbes.com, 27 May 2026
This has saved us a lot of duplication of services over the years, which means saving a lot of money and repeat tests, never mind pain and suffering.
—Inga, San Diego Union-Tribune, 25 May 2026
See All Example Sentences for duplication
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Quanta Magazine, 10 June 2026
There had been ruinous duplication of lines, and much of the construction boom had been concentrated in thinly populated states like Michigan, Illinois, Indiana, and Wisconsin—regions unlikely to generate the passenger and freight traffic needed for profitability.
—Fortune, 2 June 2026
Without someone responsible for seeing the bigger picture, there's a risk in duplication of services, misalignment of goals and the potential loss of funding from organizations and grantors that want to see a macro approach to an issue.
—Taryn Palumbo, Forbes.com, 27 May 2026
This has saved us a lot of duplication of services over the years, which means saving a lot of money and repeat tests, never mind pain and suffering.
—Inga, San Diego Union-Tribune, 25 May 2026
See All Example Sentences for duplication
Cite this Entry
“Duplication.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duplication. Accessed 15 Jun. 2026.
Copy CitationKids Definition
duplication
noun
du·pli·ca·tion
ˌd(y)ü-pli-ˈkā-shən
1
a
: an act or process of duplicating
b
: the state of being duplicated
Medical Definition
duplication
noun
du·pli·ca·tion
ˌd(y)ü-pli-ˈkā-shən
1
: the act or process of duplicating : the quality or state of being duplicated
2
: a part of a chromosome in which the genetic material is repeated
also
: the process of forming a duplication
Legal Definition
duplication
noun
du·pli·ca·tion
ˌdü-pli-ˈkā-shən, ˌdyü-
: the act, process, or result of duplicating
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