PCR

British  

abbreviation

1. polymerase chain reaction: a technique for rapidly producing many copies of a fragment of DNA for diagnostic or research purposes

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PCR Cultural  

1. A laboratory technique that can amplify the amount of DNA from a tiny sample to a large amount within just a few hours. Theoretically, PCR can take one molecule and produce measurable amounts of identical DNA in a short period of time. It is used in DNA fingerprinting and DNA sequencing.

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Discover More

An enzyme used in this process was originally found in bacteria in hot springs.

Example Sentences

Another has mild symptoms and is waiting for the results of a PCR test.

From MarketWatch • May 11, 2026

"With these PCR tests... there's sort of a range in where they can fall," he said at the press conference.

From BBC • May 11, 2026

One of 17 American citizens repatriated from the ship tested "mildly PCR positive" for the virus while another had "mild symptoms", the US Department of Health and Human Services said on May 10.

From Barron's • May 11, 2026

In most clinical settings, the PCR sample must be sent to an outside laboratory, leading to delays that can stretch from several days to weeks.

From Science Daily • Dec. 11, 2025

In April, just one month after taking over as head of the PCR, Ceausescu announced that a party congress would be convened in July.

From Area Handbook for Romania by Bernier, Donald W.