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.’
Modern Latin, from Greek hēlios sun + anthos flower.