rif·a·my·cin (rĭf'ə-mī'sĭn) n. Any of a group of antibiotics originally isolated from a strain of the soil microorganism Streptomyces mediterranei, used in the treatment of leprosy, tuberculosis, and other bacterial diseases.
[Alteration of rifomycin : probably Italian rifo(rmare), to reform (ri-, again, from Latin re-; see re- + formare, to form from Latin fōrmāre; see reform) + -mycin.]
Main Entry: rif·a·my·cin Pronunciation: "rif-&-'mIs-&n Function: noun : any of several antibiotics that are derivedfrom a bacterium of the genus Streptomyces (S. mediterranei)
rifamycin rif·a·my·cin (rĭf'ə-mī'sĭn) n. Any of a group of antibiotics originally isolated from a strain of the soil microorganism Streptomyces mediterranei, used in the treatment of leprosy, tuberculosis, and other bacterial diseases.