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/ˌʌɪ.sə(ʊ)ˈnʌɪ.əz.ɪd/ · noun
(pharmacology) 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..
Use isoniazid when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Isoniazid means (pharmacology) 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..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use isoniazid where its definition matches the intended context.
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