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dolphin

noun

dol·​phin ˈdäl-fən How to pronounce dolphin (audio)
ˈdȯl-
1
a
: any of various small marine toothed whales (family Delphinidae) with the snout more or less elongated into a beak and the neck vertebrae partially fused

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

b
: any of several related chiefly freshwater toothed whales (as of the families Platanistidae and Iniidae) : river dolphin
2
3
capitalized : delphinus
4
: a spar or buoy for mooring boats
also : a cluster of closely driven piles used as a fender for a dock or as a mooring or guide for boats

Illustration of dolphin

Illustration of dolphin
  • dolphin 1a

Example Sentences

Recent Examples on the Web Where the latter is dark yet surprisingly sweet, the former presents itself as a futuristic romance before quickly diving (sometimes literally with a dolphin) into extremely disturbing and unhinged waters. Eric Maurer, EW.com, 22 Aug. 2022 Made in Ukraine, this balancing toy that features a dolphin holding a bunch of rings will delight and excite. Ysolt Usigan, Woman's Day, 18 Aug. 2022 Christie was able to see a female dolphin and her calf under the water, as well as mating behaviors using the drone overhead. Ashley Strickland, CNN, 11 Aug. 2022 In the addition, a group of people in Texas reportedly took pictures and even rode a dolphin back in April. Michael George, CBS News, 22 July 2022 An Irrawaddy dolphin calf nicknamed Paradon was rescued by fishermen in Thailand July 22. Tassanee Vejpongsa, USA TODAY, 28 Aug. 2022 Changes to the immune system increase the susceptibility to infectious diseases, which can also affect the dolphin’s reproductive success. Sarah Sloat, NBC News, 24 Aug. 2022 PacWhale Eco-Adventures leads dolphin-viewing and whale-watching cruises in Maui, among other cetacean-centric outings. Andrea Sachs, Washington Post, 18 Aug. 2022 Mystic also received some calls and messages on social media notifying them of the dolphin sighting. Mike Mavredakis, Hartford Courant, 15 July 2022 See More

Word History

Etymology

Middle English delphyn, dolphyn, from Anglo-French delphin, alteration of Old French dalfin, from Medieval Latin dalfinus, alteration of Latin delphinus, from Greek delphin-, delphis; akin to Greek delphys womb, Sanskrit garbha

First Known Use

14th century, in the meaning defined at sense 1a(1)

Time Traveler
The first known use of dolphin was in the 14th century

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