# isoniazid

> English word · Noun · IPA /ˌʌɪ.sə(ʊ)ˈnʌɪ.əz.ɪd/ · frequency rank #98,273

## Definitions
1. A synthetic, crystalline compound, C₆H₇N₃O, (trademarks Hydra, Hyzyd, Isovit, Laniazid, Nydrazid, Rimifon, Stanozide) used as a bacteriostatic medication in the prevention and treatment of tuberculosis.

## Etymology
Contraction of isonicotinoylhydrazide.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/isoniazid