Definition of duplication in English:

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Pronunciation: /ˌd(y)o͞opləˈkāSH(ə)n/


1The action or process of duplicating something.
Example sentences
  • That would simply lead to a proliferation of bodies, unnecessary duplication of costs and effort, and coordination problems.
  • Now, the idea there, as I understand it, is to avoid unnecessary duplication between submissions.
  • All parties were permitted to be represented at the various phases in a manner designed to avoid unnecessary duplication.
1.1A copy.
1.2 Genetics A DNA segment in a chromosome that is a copy of another segment.
Example sentences
  • The screen that generated these new sc alleles also produced autosomal duplications.
  • This homolog maps on chromosome 10L and is part of the most recent set of segmental duplications in the maize genome.
  • Why are there so many segmental duplications in the human genome?


Late Middle English (used in the mathematical sense 'multiplication by two'): from Old French, or from Latin duplicatio(n-), from duplicare 'to double' (see duplicate).

For editors and proofreaders

Syllabification: du·pli·ca·tion

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