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

• alter ego
• carbon
• carbon copy
• clone
• counterpart
• doppelgänger
• doppelganger
• double
• duplicate
• facsimile
• fetch
• image
• likeness
• look-alike
• match
• mirror image
• picture
• replica
• ringer
• spit
• spitting image
• twin

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

Another helpful thing is to fill all their medications at one pharmacy, if possible, so the pharmacist knows their medications and can check for drug interactions or duplications. —Michael Merschel/ American Heart Association News, Boston Herald, 9 Feb. 2025

Despite these accomplishments, some initiatives—such as misinformation monitoring and expanded election oversight—faced criticism as overreach or duplication of efforts traditionally handled by other federal agencies. —Emil Sayegh, Forbes, 21 Nov. 2024

Although there were several goals of this venture, which became United Launch Alliance, one of them was that by combining operations, the companies could avoid duplication and become more efficient. —Eric Berger, Ars Technica, 4 Feb. 2025

Even if the bar is higher than that, Tubi’s 97 million MAU figure includes duplication across devices and within households. —Dade Hayes, Deadline, 6 Jan. 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