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

: duplicate, counterpart

3

: a part of a chromosome in which the genetic material is repeated

also : the process of forming a duplication

Synonyms

• image
• twin
• duplicate
• replica
• clone
• picture
• portrait

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

Unifying production, marketing and distribution units should reduce some duplication of basic operations. —David Bloom, Forbes.com, 31 July 2025

Meanwhile, Paul Bate of the UK Space Agency and chair of the Committee on Earth Observation Satellites (CEOS) underlined the importance of avoiding duplication and maximizing impact. —Daisy Dobrijevic, Space.com, 30 July 2025

By using nonprofits to provide the same services, Knight said the county will expand its reach, reduce duplication and deliver help faster. —Rachel Royster, Fort Worth Star-Telegram, 29 July 2025

The Pennsylvania Attorney General’s office charged him on July 8 with dozens of offenses, ranging from felony counts of unlawful use of a computer and unlawful duplication, to misdemeanor invasion of privacy and unlawful dissemination. —Theresa Braine, New York Daily News, 17 July 2025

Word History

First Known Use

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

Rhymes for duplication

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Kids 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

2

: duplicate entry 3

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