quadrangle quadral • quadrangled · · · Info · Definitions · Synonyms · Characters · · quadrangle · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a four-sided polygon. Synonyms: quadrilateral, tetragon. · · Noun Definition 1 (noun) a rectangular area surrounded on all sides by buildings. Synonyms: quad. · · Noun Definition 2 Synonyms · · · quadrilateral · · Synonym 1 tetragon · · Synonym 2 quad · · Synonym 3 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 l latin small letter l U+006C n latin small letter n U+006E q latin small letter q U+0071 r latin small letter r U+0072 u latin small letter u U+0075