# rifabutin

> English word · Noun

## Definitions
1. A bactericidal antibiotic, primarily used in the treatment of tuberculosis, whose effect is based on blocking the DNA-dependent RNA-polymerase of the bacteria.

## Etymology
From rifa- (“rifamycin derivative”).

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