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floating heart

noun

  1. any of certain aquatic plants belonging to the genus Nymphoides, of the gentian family, especially N. aquatica, having floating, more or less heart-shaped leaves and a cluster of small, white, five-petaled flowers.
  2. a related plant, Nymphoides cordata, of North America, having a cluster of white flowers and round or somewhat oval leaves that are purple beneath.


floating heart

noun

  1. any perennial aquatic freshwater plant of the genus Nymphoides , esp N. lacunosum , having floating heart-shaped leaves: family Menyanthaceae
“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


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Word History and Origins

Origin of floating heart1

An Americanism dating back to 1855–60

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