sunflower

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English

a sunflower - Helianthus annuus

Etymology

From sun +‎ flower. Compare English sunbloom.

Pronunciation

Noun

sunflower (plural sunflowers)

  1. Any plant of the genus Helianthus, so called probably from the form and color of its floral head, having the form of a large disk surrounded by yellow ray flowers.
    1. The commonly cultivated species, Helianthus annuus, a native of America.
  2. A bright yellow, like that of the flower petals.
    sunflower:  
  3. (informal, organic chemistry) Any flat, radially symmetric organic compound, such as coronene.
  4. (pathology) Synonym of worm-star
  5. (UK, rail transport) An Automatic Warning System (AWS) indicator in the driver's cab that is displayed after a driver has acknowledged an audible warning, which consists of a yellow circle enclosing a white circle, with black spokes overlaid.

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