Naiadales naiadaceous • Naiades · · · Info · Definitions · Characters · · Naiadales · · Text Latin · · Script 9 · · Length Definitions · · · (noun) an order of aquatic monocotyledonous herbaceous plants. Synonyms: order Naiadales, Alismales, order Alismales. · · Noun Definition 1 Characters · · N latin capital letter n U+004E a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C s latin small letter s U+0073