Definition of rifampin in English:



(also rifampicin)
  • A reddish-brown antibiotic used chiefly to treat tuberculosis and leprosy.

    The antibiotic is obtained from the bacterium Nocardia mediterranei

    ‘For the more commonly encountered methicillin-resistant coagulase-negative staphylococci, a combination of vancomycin, rifampin and gentamicin is indicated.’
    • ‘The sift did not reveal any deletions that make cells susceptible to amoxicillin, penicillin, rifampin or vancomycin, which are used to treat bacterial infections of the airways, stomach and skin.’
    • ‘The organisms are treatable with tetracycline, erythromycin, rifampin, and by the sulfonamides.’
    • ‘All the 300 strains were resistant to oxacillin and penicillin and susceptible to rifampicin and vancomycin.’
    • ‘All the patients had bacilli sensitive to streptomycin, isoniazid and rifampicin initially.’



/riˈfampin/ /rɪˈfæmpɪn/


1960s from rifamycin (an antibiotic first isolated from the bacterium Streptomyces mediterranei) + the insertion of pi- from piperazine.