duplication

Noun

duplication (countable and uncountable, plural duplications)

1. The act of duplicating.
   • Another argument for closing Woodhead was simply one of route duplication, and this was the main reason put forward by BR at the time.2021 July 14, Pip Dunn, “Woodhead 40 years on: time to let go”, in RAIL, number 935, page 39
2. A duplicate.
   • Counting crimes as given in the index to the Penal Code, their number is nearly twice as great as that stated, but as some are only duplications I have reduced my estimate that it may be well within the limits of the fact.1916 March, Edgar Montgomery Cullen, “The Decline of Personal Liberty in America”, in Asa W. Russell, editor, Case and Comment: The Lawyer’s Magazine, volume 22, number 10, Rochester, N.Y.: Lawyers...
   • Registration of trademarks had been revised and a unit had been set up to clear up duplications.1949 January 17, “Essential Oil Association Told Trade Not Normal”, in Oil, Paint and Drug Reporter, volume 155, number 3, New York, N.Y., →OCLC, page 7, column 4
3. A folding over; a fold.
4. The act or process of dividing by natural growth or spontaneous action.
   • duplication of cartilage cells
5. The act of copying a nucleotide sequence from one chromosome to another.
6. A nucleotide sequence copied through such a process.