duplication

noun

du·​pli·​ca·​tion ˌdü-pli-ˈkā-shən How to pronounce duplication (audio)
also ˌdyü-
Synonyms of duplicationnext
1
a
: the act or process of duplicating
b
: the quality or state of being duplicated
2
: duplicate, counterpart
3
: a part of a chromosome in which the genetic material is repeated
also : the process of forming a duplication

Synonyms of duplication

Relevance
See All Synonyms & Antonyms in Thesaurus

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Removing unnecessary duplication, clarifying obligations and making rules easier to comply with can strengthen the Single Market and make European companies more competitive. — Ben Vanpeperstraete, Footwear News, 23 Oct. 2026 Born in Los Angeles in 1954 to parents who hailed from Chicago, his father, Warren, founded a tape duplication service and later served as vice president of sales at Sussex Records, which produced acts like R&B crooner Bill Withers. — Carolina A. Miranda, Los Angeles Times, 20 Oct. 2026 Congress also needs to review federal programs regularly, eliminate duplication, recover improper payments, and require greater transparency for emergency spending. — Wcco Staff, CBS News, 13 Oct. 2026 The duplication even goes meta at various points in the show. — Alex Greenberger, ARTnews.com, 7 Oct. 2026 See All Example Sentences for duplication

Word History

First Known Use

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

Time Traveler
The first known use of duplication was in the 15th century

Rhymes for duplication

See All Rhymes for duplication

Browse Nearby Words

duplicating machine
duplication
duplication of the cube
See all Nearby Words

Cite this Entry

“Duplication.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duplication. Accessed 27 Oct. 2026.

Copy Citation

Kids Definition

duplication

noun
du·​pli·​ca·​tion ˌd(y)ü-pli-ˈkā-shən How to pronounce duplication (audio)
1
a
: an act or process of duplicating
b
: the state of being duplicated
2
: duplicate entry 3

Medical Definition

duplication

noun
du·​pli·​ca·​tion ˌd(y)ü-pli-ˈkā-shən How to pronounce duplication (audio)
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- How to pronounce duplication (audio)
: the act, process, or result of duplicating

More from Merriam-Webster on duplication

Britannica.com: Encyclopedia article about duplication

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Last Updated: - Updated example sentences

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of milieu

See Definitions and Examples »

Popular in Grammar & Usage

See More

How to Use 'Who' vs. 'Whom'

Merriam-Webster’s Great Big List of Words You Love to Hate

'Affect' vs. 'Effect'

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?
See More

Popular in Wordplay

See More

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

12 Lovely and Unusual Words for the Natural World

Why do we 'bury the lede?'

'Za' and 9 Other Words to Help You Win at SCRABBLE
See More

Popular

See More

How to Use 'Who' vs. 'Whom'

The Longest Long Words List

9 Words That Sound Like Insults But Aren't
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
different halloween monsters in silhouette
A Monstrous Vocab Quiz Words That Go Bump in the Night
See All