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n. - Any plant of a particular genus having large flower heads with dark disk florets and showy yellow rays.

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Usage examples (31)
  • She did not know that a helianthus was a sunflower till her mother told her, and she had never seen the dear, blue, bell-shaped flowers that always grow in old-fashioned...
  • She did not know that a helianthus was a sunflower until her mother told her so, and she had never seen the dear, blue, bell-shaped flowers that always grow in...
  • Peonies come up year after year, iris takes care of itself, helianthus or perennial sunflower bobs up each year.
  • Powis Castle artemesia, feverfew, Regina heuchera and helianthus maximillian, not sure about the spelling on that one, and of course the wonderful plaque.
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We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.