penicillin v penicillin-resistant bacteria • penicillin v potassium · · · Info · Definitions · Synonyms · Characters · · penicillin v · · Text Common · · Latin · · Scripts 12 · · Length 5 · · Syllables Definitions · · · (noun) a crystalline penicillin similar in action to penicillin G but more resistant to the action of gastric acids. Synonyms: penicillin V, phenoxymethyl penicillin. · · Noun Definition 1 Synonyms · · · phenoxymethyl penicillin · · Synonym 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E p latin small letter p U+0070 v latin small letter v U+0076