rifamycin

noun

rif·a·my·cin ˌrif-ə-ˈmīs-ᵊn

: any of several antibiotics that are derived from a soil bacterium (Amycolatopsis rifamycinica)

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“Rifamycin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rifamycin. Accessed 29 Nov. 2025.

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