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

Example Sentences

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

The BBC has contacted PCR Corp for comment.

From BBC • Sep. 30, 2025

At-home tests should still work to detect this variant, but PCR tests that doctors can order are more accurate.

From Salon • Jun. 11, 2025

"The trouble with PCR is that you have to think of the viruses that might be causing an infection and do a separate test for each and every one," she says.

From BBC • Apr. 29, 2025

Individual and group participation in the political process was limited to the forms and means permitted by the PCR.

From Area Handbook for Romania by Bernier, Donald W.