: a slender, long-tailed, carnivorous mammal (Cryptoprocta ferox of the family Eupleridae) of Madagascar that has retractile claws, usually reddish-brown or sometimes black, short, thick fur, and anal scent glands
The fossa evolved on the catless island of Madagascar, where it became the ecological equivalent of a cat. With nothing else around to fill the role, the fossa became a sort of mini-leopard, hunting lemurs and other small animals in the forest at night.—Fiona Sunquist
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2fossa
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Noun
Acheron Fossae is filled with dramatic landscape features — most notably, its namesake fossae, or fault-like channels that criss-cross the surface.—Stefanie Waldek, Space.com, 11 Aug. 2025 Zaza, a 7-year-old male fossa, has been transferred from California to England to breed with Shala, Chester Zoo’s resident female, according to a May 9 news release.—Irene Wright, Miami Herald, 9 May 2025 Similar to a golf ball resting on a golf tee, only a small portion of the humeral head makes contact with the glenoid fossa at any time.—Tim Petrie, Dpt, Verywell Health, 28 July 2024 In life, the carnivore was about the size of a bobcat and probably behaved like a civet or fossa.—Riley Black, Smithsonian Magazine, 29 June 2023
Word History
Etymology
Noun (1)
borrowed from Medieval Latin, going back to Latin, "ditch, trench," noun derivative from feminine of fossus, past participle of fodere "to jab, dig" — more at fossil entry 1
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