petitio principii petitio • petition · · · Info · Definitions · Synonyms · Characters · · petitio principii · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) the logical fallacy of assuming the conclusion in the premises; begging the question. Synonyms: petitio principii, petitio. · · Noun Definition 1 Synonyms · · · petitio · · 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 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074