polymerase chain reaction
The tests use a method called polymerase chain reaction, or PCR, to detect genetic materials—bits of viral RNA—that are present in the body when the virus is active.Denise Chow

Dictionary Entries Near PCR

Cite this Entry

“PCR.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/PCR. Accessed 23 Nov. 2024.

Medical Definition

PCR

abbreviation
polymerase chain reaction

More from Merriam-Webster on PCR

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!