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

ampicillin

noun

/ˌæmpɪˈsɪlɪn/

/ˌæmpɪˈsɪlɪn/

[uncountable]

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a form of penicillin that is used to treat certain infections
Word Origin1960s: blend of amino and a contraction of penicillin.

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See ampicillin in the Oxford Advanced American Dictionary

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