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/ɹɪˈfæm.pɪs.ɪn/ · noun
(pharmacology) A reddish-brown semisynthetic antibiotic C₄₃H₅₈N₄O₁₂ obtained from the bacterium Amycolaptosis mediterranei, used chiefly to treat tuberculosis, leprosy, and asymptomatic carriers of meningococci..
Use rifampicin when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rifampicin means (pharmacology) A reddish-brown semisynthetic antibiotic C₄₃H₅₈N₄O₁₂ obtained from the bacterium Amycolaptosis mediterranei, used chiefly to treat tuberculosis, leprosy, and asymptomatic carriers of meningococci..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use rifampicin where its definition matches the intended context.
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