spirodela spiro compound • Spirodela · · · Info · Definitions · Characters · · spirodela · · Text Latin · · Script 9 · · Length 4 · · Syllables Definitions · · · (noun) minute aquatic herbs floating on the water surface consisting of a shiny leaflike frond and 2-21 roots. Synonyms: Spirodela, genus Spirodela. · · Noun Definition 1 Characters · · 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 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073