floating heart

American  

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.

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floating heart British  

noun

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

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Etymology

Origin of floating heart

An Americanism dating back to 1855–60

Example Sentences

"This study adds to emerging evidence that vaccines could play a role in promoting healthy aging by modulating biological systems beyond infection prevention," she said.

From Science Daily • Feb. 26, 2026

The policy, green-lit by Cardiff council on Friday, is focused on sustainability and promoting healthy food and drink.

From BBC • Sep. 20, 2025

“When we’re looking at promoting healthy well-being, especially in our adolescents, never once have I seen it said … ‘These kids really need to see an ultrasound video,’” Christiansen said.

From Seattle Times • Feb. 22, 2024

Just as governments have a role in encouraging food manufacturers to avoid carcinogens or dangerous chemical additives, they have a role in promoting healthy diets from food systems that are sustainable over the long term.

From Salon • Jul. 17, 2023

Then the Hope Springs middle school principal talked about the problem with bake sales: promoting healthy food choices versus the importance of student-led fundraising.

From "Hope Springs" by Jaime Berry