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 waste stems from back-office duplication, inefficient systems, and leadership complacency, often fueled by an expectation of bailouts. — Ryan Dewey Smith, Forbes.com, 18 Aug. 2026

Under North Carolina law, healthcare providers must receive state approval before building or expanding facilities to prevent the unnecessary duplication of services. — Chase Jordan august 17, Charlotte Observer, 17 Aug. 2026

Both Waltz and Bartos argue that reform is intended to strengthen precisely these kinds of operations by eliminating duplication elsewhere. — Bethany Mandel, The Washington Examiner, 16 Aug. 2026

The subtle duplication helps tie the areas together visually and geologically. — Mackenzie Schmidt, PEOPLE, 15 Aug. 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