sium suave sium sisarum • si unit · · · Info · Definitions · Synonyms · Characters · · sium suave · · Text Common · · Latin · · Scripts 10 · · Length 4 · · Syllables Definitions · · · (noun) stout white-flowered perennial found wild in shallow fresh water; northern United States and Asia. Synonyms: water parsnip, Sium suave. · · Noun Definition 1 Synonyms · · · water parsnip · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D s latin small letter s U+0073 u latin small letter u U+0075 v latin small letter v U+0076