A synthetic form of penicillin effective against germs that have developed resistance to natural penicillin. Compare ampicillin, oxacillin.

【药】哥沙西林；甲基邻氯苯基异恶唑青霉素(一种合成盘尼西林，能有效对付抗天然盘尼西林的细菌。参照ampicillin, oxacillin)。