quadratic equation quadratic • quadratic polynomial · · · Info · Definitions · Synonyms · Characters · · quadratic equation · · Text Common · · Latin · · Scripts 18 · · Length 8 · · Syllables Definitions · · · (noun) an equation in which the highest power of an unknown quantity is a square. Synonyms: quadratic equation, quadratic. · · Noun Definition 1 Synonyms · · · quadratic · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 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 q latin small letter q U+0071 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075