penicillin V

penicillin V

noun \-ˈvē\

Definition of PENICILLIN V

: 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