Definition of ampicillin noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌæmpɪˈsɪlɪn//
; NAmE NAmE//ˌæmpɪˈsɪlɪn//
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a form of penicillin that is used to treat certain infections Word Origin 1960s: blend of amino and a contraction of penicillin.
See the Oxford Advanced American Dictionary entry: ampicillin