R factor

noun
\ ˈär- How to pronounce R factor (audio) \

Definition of R factor

: a group of genes present in some bacteria that provide a basis for resistance to antibiotics and can be transferred from cell to cell by conjugation

First Known Use of R factor

1944, in the meaning defined above

History and Etymology for R factor

resistance

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The first known use of R factor was in 1944

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Dictionary Entries Near R factor

RF

R factor

RFB

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Cite this Entry

“R factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/R%20factor. Accessed 5 Aug. 2021.

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More Definitions for R factor

R factor

noun
\ ˈär- How to pronounce R factor (audio) \

Medical Definition of R factor

: a group of genes present in some bacteria that provide a basis for resistance to antibiotics and can be transferred from cell to cell by conjugation

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