an antibiotic (trade name Erythrocin or E-Mycin or Ethril or Ilosone or Pediamycin) obtained from the actinomycete Streptomyces erythreus; effective against many Gram-positive bacteria and some Gram-negative
例句
用作名词 (n.)
The doctor prescribed two boxes of erythromycin to cure him. 医生给他开了两盒红霉素来治疗他的病。