nalidixic acid
noun
na·li·dix·ic acid
ˌnā-lə-ˈdik-sik- 
: an antibacterial agent C12H12N2O3 that is used especially in the treatment of genitourinary infections
Examples of nalidixic acid in a Sentence
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Further tests found predicted resistance to antibiotics such as nalidixic acid and reduced susceptibility to ciprofloxacin.
—
Matt Cannon, MSNBC Newsweek, 11 July 2025
All of them were resistant to at least seven antibiotics (azithromycin, ciprofloxacin, clindamycin, erythromycin, nalidixic acid, telithromycin, and tetracycline).
—Beth Mole, Ars Technica, 21 Sep. 2018
The outbreak strain of C. jejuni could withstand three antibiotics: tetracycline, nalidixic acid, and ciprofloxacin.
—Beth Mole, Ars Technica, 11 Feb. 2018
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Matt Cannon, MSNBC Newsweek, 11 July 2025
All of them were resistant to at least seven antibiotics (azithromycin, ciprofloxacin, clindamycin, erythromycin, nalidixic acid, telithromycin, and tetracycline).
—Beth Mole, Ars Technica, 21 Sep. 2018
The outbreak strain of C. jejuni could withstand three antibiotics: tetracycline, nalidixic acid, and ciprofloxacin.
—Beth Mole, Ars Technica, 11 Feb. 2018
Cite this Entry
“Nalidixic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nalidixic%20acid. Accessed 18 Jul. 2025.
Copy CitationMedical Definition
nalidixic acid
noun
na·li·dix·ic acid
ˌnā-lə-ˌdik-sik-
: an antibacterial agent C12H12N2O3 that is used especially in the treatment of genitourinary infections see neggram
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