: having a fin or fins
… the real stars of underwater acoustics are the finned marine mammals, including whales, porpoises and dolphins.Todd Preston
a finned Cadillac
a finned cylinder
often used in combination
The first postwar car with fins and V-8 power set a mood of exuberance that reached its peak with the shark-finned Caddy of 1959.Joseph R. Szczesny

Examples of finned in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ramsey's underwater work has become a polarizing topic due to her decision to swim freely alongside a range of shark species — tiger, great white and all — without a cage for protection, often seen uncomfortably close to the finned predators in her viral videos. Skyler Caruso, People.com, 30 June 2025 The finned behemoth began to thrash, but Kopanetskyi held firm, shushing it softly in Russian. Kylie Williams, Miami Herald, 29 June 2025 Eat a lot more of these While seafood experts often disagree about finned fish farming, many agree that vertical ocean farming is a great way to grow sustainable food that is not only nutritious but also cleans our ocean water at the same time. Noah Galuten, Los Angeles Times, 16 Apr. 2025 From 1960 through 1968, the full-size Pontiac offered eight-bolt, finned wheels that helped cool the brake drums. David Krumboltz, Mercury News, 30 Mar. 2025 See All Example Sentences for finned

Word History

First Known Use

14th century, in the meaning defined above

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

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Cite this Entry

“Finned.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/finned. Accessed 12 Jul. 2025.

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