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Definition of helianthus
helianthus
/ˌhiːliˈænθəs/
he · li · an · thus
Plural:helianthuses
helianthus Lexical Profile
CEFR
C2
Grade
12
Tier
3
Usage
Rare
Syllables
4
helianthus Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
Any plant of the North and South American genus Helianthus in the family Asteraceae, widely known as the sunflower, characterized by rough, hairy stems and large, showy composite flower heads with bright yellow ray florets surrounding a central disk of brown, purple, or yellow tubular florets.
Synonyms
View all synonyms for helianthus• Rhymes for helianthus
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Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Helianthus. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/helianthus