penicillin g penicillin f • penicillin o · · · Info · Definitions · Synonyms · Characters · · penicillin g · · Text Common · · Latin · · Scripts 12 · · Length 5 · · Syllables Definitions · · · (noun) the penicillin that constitutes the principal component of many commercial antibiotics. Synonyms: penicillin G, benzylpenicillin. · · Noun Definition 1 Synonyms · · · benzylpenicillin · · Synonym 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 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