river dolphin

noun

Definition of 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

This May, the team of astronomers and ecologists will look for orangutans in Malaysia and spider monkeys in Mexico before heading to Brazil to search for river dolphins. Sarah Gibbens, National Geographic, "How Do You Protect Endangered Animals at Night? Ask an Astrophysicist.," 6 Apr. 2018 Scientists are trying to learn more about the diverse and unique environment, where jaguars and margays roam the savannah and jungles, and river dolphins swim in the Guayabero River. Murray Carpenter, New York Times, "Scientists Fear for Colombia’s ‘Melted Rainbow’," 26 Feb. 2018 Each year dozens of new species are discovered hiding within their collections, from extinct river dolphins to new dinosaurs to sacred crocodiles. Jack Ashby, Smithsonian, "The Hidden Biases That Shape Natural History Museums," 20 Dec. 2017 Among wildlife likely to be encountered during the seven days on the boat are pink and gray river dolphins; parrots, tiger herons, laughing falcons and other interesting birds; squirrel monkeys and capuchin monkeys; sloths; and poison dart frogs. Phil Marty, chicagotribune.com, "Adventure on the Amazon River, mud on the Taj Mahal and Portugal on the cheap," 1 Sep. 2017 Among wildlife likely to be encountered during the seven days on the boat are pink and gray river dolphins Phil Marty, chicagotribune.com, "Adventure on the Amazon River, mud on the Taj Mahal and Portugal on the cheap," 1 Sep. 2017 As the nation has modernized, the threats confronting the river dolphins have multiplied. Doug Clark, New York Times, "In a Fragile Partnership, Dolphins Help Catch Fish in Myanmar," 31 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'river dolphin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of river dolphin

1870, in the meaning defined above

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The first known use of river dolphin was in 1870

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