1 porpoise | Definition of porpoise

porpoise

noun
por·​poise | \ ˈpȯr-pəs How to pronounce porpoise (audio) \

Definition of porpoise

 (Entry 1 of 2)

1 : any of a family (Phocoenidae) of small gregarious toothed whales especially : a blunt-snouted usually dark gray whale (Phocoena phocoena) of the North Atlantic and North Pacific that typically ranges from 5 to 6 feet (1.5 to 1.8 meters) in length
2 : dolphin sense 1a(1) not used technically

Note: While not closely related, porpoises and dolphins share a physical resemblance that often leads to misidentification. Porpoises typically have flat, spade-shaped teeth, triangular dorsal fins, and shortened beaks with relatively small mouths while dolphins have cone-shaped teeth, curved dorsal fins, and elongated beaks with larger mouths.

porpoise

verb
porpoised; porpoising; porpoises

Definition of porpoise (Entry 2 of 2)

intransitive verb

1 : to leap or plunge like a porpoise penguins … porpoise out of the water— David Lewis
2 : to rise and fall repeatedly

Examples of porpoise in a Sentence

Recent Examples on the Web: Noun

During a four-hour span, the sightings were mind-blowing: 55 humpback whales, 25 harbor porpoise, four killer whales (orcas), four fin whales, along with masses of sea lions too numerous to count. Tom Stienstra, SFChronicle.com, "Humpbacks, killer whales, fin whales star in coastal spectacle," 28 Aug. 2019 Around 3,000 whales, dolphins and porpoises are held in tanks globally, according to wildlife charity Whale and Dolphin Conservation. Washington Post, "Whales from Chinese aquarium starting retirement in Iceland," 19 June 2019 Researchers in Alaska have studied the harbor porpoise, elusive in those waters. Rodrigo Pérez Ortega, The Mercury News, "Monterey Bay: Following the DNA trail in the Pacific Ocean," 11 Aug. 2019 When Zigun moved to Coney Island in the 1970s, many of its crumbling buildings were topped with nautical stone figures, including mermaids, porpoises and Neptune clasping his trident. Scottie Andrew And Nadeem Muaddi, CNN, "Mermaids are taking over New York this weekend. Here's why," 22 June 2019 Kenai is also a wildlife-lover’s paradise, home to orcas and humpbacks, puffins, porpoises, and much more. National Geographic, "Alaska Family Journey: Wilderness Explorer," 17 June 2019 The international prize honored his campaigns to save Mexico’s near-extinct vaquita porpoises and to promote the sale of Mexican shrimp caught without the (now-banned) gill nets that were entangling vaquita. Pam Kragen, San Diego Union-Tribune, "Carlsbad, Baja chefs aim to heal border rift over the dinner table," 12 July 2019 The magic vessel could be a yacht or a galley, a porpoise or a mermaid. Katy Waldman, The New Yorker, "In Mark Haddon’s “The Porpoise,” Storytelling Is an Instrument of Violence and Solace," 13 June 2019 The bill bans importing, exporting, keeping and breeding whales, dolphins and porpoises, as well as making the animals perform for entertainment. Helen Murphy, PEOPLE.com, "Canada Passes Ban Making It Illegal to Keep Dolphins and Whales in Captivity," 11 June 2019

Recent Examples on the Web: Verb

Calvin stepped up to the glass, watching Fiona porpoise around Hippo Cove with her mother, Bibi. Mallorie Sullivan, Cincinnati.com, "Like Fiona, he was born prematurely. Their meeting will melt your heart.," 20 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'porpoise.' 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 porpoise

Noun

14th century, in the meaning defined at sense 1

Verb

1909, in the meaning defined at sense 1

History and Etymology for porpoise

Noun

Middle English porpoys, from Anglo-French porpeis, from Medieval Latin porcopiscis, from Latin porcus pig + piscis fish — more at farrow, fish

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More Definitions for porpoise

porpoise

noun

English Language Learners Definition of porpoise

: a small usually gray and white whale that has a rounded nose

porpoise

noun
por·​poise | \ ˈpȯr-pəs How to pronounce porpoise (audio) \

Kids Definition of porpoise

1 : a small whale with teeth that resembles a dolphin but has a blunt rounded snout

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More from Merriam-Webster on porpoise

Rhyming Dictionary: Words that rhyme with porpoise

Spanish Central: Translation of porpoise

Nglish: Translation of porpoise for Spanish Speakers

Britannica.com: Encyclopedia article about porpoise