fluoroquinolone
noun
flu·o·ro·quin·o·lone
ˌflu̇r-ō-ˈkwi-nə-ˌlōn 
: any of a group of fluorinated derivatives of quinolone that are used as antibacterial drugs
Examples of fluoroquinolone in a Sentence
Recent Examples on the Web
Certain Antibiotics and Other Medications Some antibiotics—especially tetracyclines and fluoroquinolones—should not be taken with milk, butter, yogurt, or cheese.910
Several other medications may also decrease in absorption when taken with milk.
—
Sarah Jividen, Verywell Health, 7 Jan. 2026
Use of some fluoroquinolone antibiotics, such as ciprofloxacin and levofloxacin, has also been linked with a higher risk of nightmares.
—Stacey Colino, Time, 3 Nov. 2025
To cite just one example, treatment with the antibiotic fluoroquinolone has been found to result in a rapid and significant decrease in the diversity and richness of the gut microbiota.
—Juergen Eckhardt, Forbes, 24 Sep. 2024
More than 80 percent of infections are caused by E. coli, and in a 2022 report, the World Health Organization found that one in five UTI infections caused by E. coli showed reduced susceptibility to standard antibiotics like ampicillin, co-trimoxazole, and fluoroquinolones.
—Emily Mullin, WIRED, 10 Sep. 2024
Since the first macrolides were developed, efforts have been made to improve them by replacing their side chains with structures resembling fluoroquinolones.
—New Atlas, 24 July 2024
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Sarah Jividen, Verywell Health, 7 Jan. 2026
Use of some fluoroquinolone antibiotics, such as ciprofloxacin and levofloxacin, has also been linked with a higher risk of nightmares.
—Stacey Colino, Time, 3 Nov. 2025
To cite just one example, treatment with the antibiotic fluoroquinolone has been found to result in a rapid and significant decrease in the diversity and richness of the gut microbiota.
—Juergen Eckhardt, Forbes, 24 Sep. 2024
More than 80 percent of infections are caused by E. coli, and in a 2022 report, the World Health Organization found that one in five UTI infections caused by E. coli showed reduced susceptibility to standard antibiotics like ampicillin, co-trimoxazole, and fluoroquinolones.
—Emily Mullin, WIRED, 10 Sep. 2024
Since the first macrolides were developed, efforts have been made to improve them by replacing their side chains with structures resembling fluoroquinolones.
—New Atlas, 24 July 2024
Cite this Entry
“Fluoroquinolone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluoroquinolone. Accessed 29 Jan. 2026.
Copy CitationMedical Definition
fluoroquinolone
noun
flu·o·ro·quin·o·lone
-ˈkwin-ə-ˌlōn
: any of a group of fluorinated derivatives (such as ciprofloxacin and levofloxacin) of quinolone that are used as antibacterial drugs
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