Dictionary

R factor

noun \ˈär-\

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

Origin of R FACTOR

resistance
First Known Use: 1962

R factor

noun \ˈär-\   (Medical Dictionary)

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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