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 of duplication

• 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

The duplication lets Kremlin media maintain the illusion of a single, stable seat of power. —Efrat Lachter, FOXNews.com, 16 Nov. 2025

Collaborative models such as Denim Deal, can help reduce development costs and avoid duplication. —Angela Velasquez, Sourcing Journal, 13 Nov. 2025

Too often, fragmented funding streams and overlapping mandates lead to duplications of assistance in some areas and critical gaps in others. —Arif Husain, Foreign Affairs, 11 Nov. 2025

The duplication begins with the two strands of DNA pulling apart like a zipper. —Orianna Rosa Royle, Fortune, 9 Nov. 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