polygonaceae polygon • Polygonaceae · · · Info · Definitions · Characters · · polygonaceae · · Text Latin · · Script 12 · · Length 5 · · Syllables Definitions · · · (noun) a family of plants of order Polygonales chiefly of the north temperate zone; includes the buckwheats. Synonyms: Polygonaceae, family Polygonaceae, buckwheat family. · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 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 o latin small letter o U+006F p latin small letter p U+0070 y latin small letter y U+0079