noun🔗ShareПенициллин, антибиотикAny of a group of narrow-spectrum antibiotics obtained from Penicillium molds or synthesized; they have a beta-lactam structure; most are active against gram-positive bacteria and used in the treatment of various infections and diseases."The doctor prescribed penicillin for my son's ear infection, hoping the antibiotic would quickly kill the bacteria. "Врач прописал пенициллин от ушной инфекции моего сына, надеясь, что антибиотик быстро убьет бактерии.medicinebiologychemistrybiochemistrymicroorganismdiseasesubstanceChat with AIVocabulary GamePractice Reading