Menyanthaceae meny • Menyanthaceous · · · Info · Definitions · Characters · · Menyanthaceae · · Text Latin · · Script 13 · · Length Definitions · · · (noun) a dicotyledonous family of marsh plants of order Gentianales. Synonyms: family Menyanthaceae, buckbean family. · · Noun Definition 1 Characters · · M latin capital letter m U+004D a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 n latin small letter n U+006E t latin small letter t U+0074 y latin small letter y U+0079