river dolphin


: any of various small, toothed whales (as of the families Platanistidae and Iniidae) that chiefly inhabit rivers of South America and Asia and have a rounded forehead and a snout elongated into a long beak

Examples of river dolphin in a Sentence

Recent Examples on the Web Female koalas sometimes mount other females, while male Amazon river dolphins have been known to penetrate each other’s blowholes. Jennifer Ouellette, Ars Technica, 5 June 2023 Due to the low water levels, endangered pink river dolphins in Lake Tefé, Brazil are at risk of suffocation and a major hydropower plant near Porto Velho has also been shut down. Laura Baisas, Popular Science, 25 Oct. 2023 In Lake Tefé, water temperatures remain high and the carcasses of more pink river dolphins have surfaced over the last week, bringing the death toll to 153 since the first carcasses were recovered on Sept. 23, Dr. Fleischmann said. Manuela Andreoni, New York Times, 17 Oct. 2023 Amazon river dolphins, also known as pink river dolphins, can grow up to nine feet long and weigh more than 350 pounds, per the World Wildlife Fund. Sarah Kuta, Smithsonian Magazine, 10 Oct. 2023 More than 100 Amazonian river dolphins were found dead in the past week, after water temperatures in the Brazilian Amazon topped 102 degrees in some places. Molly Taft, The New Republic, 6 Oct. 2023 Pink river dolphins, which some Indigenous communities consider sacred, are emblems and mascots of the region. Diana Durán, Washington Post, 4 Oct. 2023 The drought is also the likely cause of dozens of river dolphin deaths in Tefe Lake, near the Amazon River. Fabiano Maisonnave, The Christian Science Monitor, 18 Oct. 2023 At least 125 river dolphins have died in a Brazilian lake in recent weeks, likely due to a combination of drought and unusually high water temperatures. Sarah Kuta, Smithsonian Magazine, 10 Oct. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'river dolphin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of river dolphin was in 1870

Dictionary Entries Near river dolphin

Cite this Entry

“River dolphin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/river%20dolphin. Accessed 24 Feb. 2024.

Last Updated: - Updated example sentences
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