a substance obtained from mould, used as a drug to treat or prevent infections caused by bacteria; a type of antibiotic 青霉素；盘尼西林 The doctor put me on a course of penicillin. 医生给我开了一个青霉素疗程。 a strain of bacteria resistant to penicillin 一种对青霉素有抵抗力的细菌
Oxford Collocations DictionaryPenicillin is used before these nouns:- allergy
- injection
Word Originfrom the modern Latin genus name Penicillium, from Latin penicillus ‘paintbrush’ (because of the brush-like fruiting bodies) + -in.