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penicillin V

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noun \-ˈvē\

Medical Definition of penicillin V

  1. :  a crystalline nonhygroscopic acid that is used in the form of its potassium salt C16H17KN2O5S and has antibacterial action similar to penicillin G and is more resistant to inactivation by gastric acids—called also phenoxymethyl penicillin

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