リファンピンMeanings1nounrifampin; rifampicinAn antibiotic used primarily to treat tuberculosis and other bacterial infections. The term リファンピシン is also used synonymously.See also: リファンピシン結けっ核かくの治ち療りょうにはリファンピンがよく使つかわれる。Rifampin is often used in the treatment of tuberculosis.