Definition of helianthus in English:

helianthus

noun

  • A plant of the genus Helianthus in the daisy family, especially (in gardening) a sunflower.

    • ‘Tuck summer bloomers like purple verbena, yellow daisylike helianthus, purple coneflower, and coreopsis behind it.’
    • ‘The giant helianthus grown mostly for show here, is grown on the continent as a commercial crop.’
    • ‘I just did a little arrangement of nasturtiums, marigolds, and some helianthus, as bright as I could make it.’

Origin

Modern Latin, from Greek hēlios sun + anthos flower.

Pronunciation:

helianthus

/ˌhiːlɪˈanθəs/