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

This may reduce duplication, although temporary processing, logging, vendors and model-provider retention policies still need careful review. — Steve Dawson, Forbes.com, 12 Nov. 2026

This points to an evolutionary event — a DNA duplication — that occurred well before LUCA evolved. — Yasemin Saplakoglu, Quanta Magazine, 12 Nov. 2026

Officials say that each absentee ballot is tied to a specific voter, meaning that even in the case of a duplication problem, voters can only cast one ballot for each election. — Dan Raby, CBS News, 10 Nov. 2026

Alignment can reduce duplication and help direct resources toward improvement. — Orine D’souza, Footwear News, 9 Nov. 2026

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