Definition of nalidixic acid in English:

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nalidixic acid

Pronunciation: /ˌnāliˌdiksik ˈasid/


A synthetic compound that inhibits the multiplication of bacteria, used chiefly to treat urinary infections.
Example sentences
  • In India, almost 100% of the healthy population carry bacteria that are resistant to ampicillin, trimethoprim, nalidixic acid, and chloramphenicol.
  • The original quinolone antibiotics included nalidixic acid, cinoxacin and oxolinic acid (no longer available in the United States).
  • There has also been a change in the antimicrobial susceptibility pattern; resistance to ampicillin and nalidixic acid has changed in recent times.


1960s: nalidixic by rearrangement of elements from naphthalene, carboxylic, and di-1 (forming the systematic name).

For editors and proofreaders

Syllabification: na·li·dix·ic ac·id

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