helianthus annuus helianthus angustifolius • helianthus giganteus · · · Info · Definitions · Synonyms · Characters · · helianthus annuus · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) annual sunflower grown for silage and for its seeds which are a source of oil; common throughout United States and much of North America. Synonyms: common sunflower, mirasol, Helianthus annuus. · · Noun Definition 1 Synonyms · · · common sunflower · · Synonym 1 mirasol · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075