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Definition of Helianthus annuus
1. 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.
Exact synonyms: Common Sunflower, Mirasol
Terms within: Sunflower Seed
Generic synonyms: Helianthus, Sunflower
Terms within: Sunflower Seed
Generic synonyms: Helianthus, Sunflower