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R factor

American  

noun

  1. a genetic component of some bacteria that provides resistance to antibiotics and can be transferred from one bacterium to another by conjugation.

Etymology

Origin of R factor

1960–65; r(esistance) factor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Jason R. Factor, an attorney at Cleary Gottlieb Steen & Hamilton who advises private-equity firms, said, "I personally would be careful about using a ratio as high as nine to one," because an aggressive valuation can "create issues" in any kind of IRS audit.

From The Wall Street Journal

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.