1. e-mycin 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 [syn: erythromycin, erythrocin, e-mycin, ethril, ilosone, pediamycin].
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