carbapenem

noun

car·​ba·​pen·​em ˌkär-bə-ˈpe-nəm How to pronounce carbapenem (audio)
: any of a class of broad-spectrum antibiotics (such as imipenem) resistant to hydrolysis by beta-lactamase
Another class of antibiotics, carbapenems, is used as an antibiotic of last resort for the most persistent infections.Nicholas Bakalar

Examples of carbapenem in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For instance, among isolates of Acinetobacter baumannii, a common cause of nosocomial infections, 68 percent were resistant to carbapenem antibiotics, a class of antibiotics often used as a last-line defense. Jennifer Ouellette, Ars Technica, 11 July 2023 This type of bacteria, resistant to the potent antibiotic carbapenem, infected 8,500 in hospitals and killed 700 in 2017, according to the Centers for Disease Control and Prevention. Ken Alltucker, USA TODAY, 27 May 2023 The new strain, never seen before in the U.S., can survive exposure to at least 12 different kinds of antibiotics—including carbapenems, key drugs given as a last resort. Allison Parshall, Scientific American, 14 Apr. 2023 Colistin is an old antibiotic that’s considered the last line of defense against certain infections, including those that are resistant to carbapenems, another last-resort class of antibiotics. Alex Wigglesworth, Los Angeles Times, 10 Apr. 2023 See All Example Sentences for carbapenem

Word History

First Known Use

1979, in the meaning defined above

Time Traveler
The first known use of carbapenem was in 1979

Browse Nearby Words

Cite this Entry

“Carbapenem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbapenem. Accessed 10 Sep. 2025.

Medical Definition

carbapenem

noun
car·​ba·​pen·​em ˌkär-bə-ˈpe-nəm How to pronounce carbapenem (audio)
: any of a class of broad-spectrum beta-lactam antibiotics (such as imipenem) having a five-membered ring system similar to the penicillins but containing a carbon atom instead of a sulfur atom
It rendered the Klebsiella, which was already resistant to many antibiotics used in critical care medicine, insensitive to the only remaining group that worked reliably and safely—the carbapenems, the so-called drugs of last resort.Maryn McKenna, Scientific American
Love words? Need even more definitions?

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