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disc floret

British  

noun

  1. any of the small tubular flowers at the centre of the flower head of certain composite plants, such as the daisy Compare ray floret

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012