disk flower

noun

, Botany.

1. one of a number of small tubular flowers composing the disk of certain composite plants.

disk flower

1. Any of the tiny tubular flowers in the central portion of the capitulum or flower head of certain plants of the composite family (Asteraceae or Compositae). In many composite flowers, such as the daisy and sunflower, the disk flowers are surrounded by flattened ray flowers.

Word History and Origins

Origin of disk flower¹

First recorded in 1865–70