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nalidixic acid

American  
[ney-li-dik-sik, ney-] / ˈneɪ lɪˈdɪk sɪk, ˌneɪ- /

noun

Pharmacology.

  1. a substance, C 1 2 H 1 2 N 2 O 3 , that has antibacterial activity against many susceptible Gram-negative organisms, especially used in the treatment of urinary tract infections.

Etymology

Origin of nalidixic acid

1960–65; by shortening and rearrangement of naphthyridine and carboxylic acid, components of its chemical name

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