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Plants & CreaturesGreekEnglish

Deinonychus

/daɪˈnɒnɪkəs/noun

A wolf-sized predatory dinosaur of the Cretaceous, named for the sickle claw on each second toe.

The Greek roots

δεινός
deinós
terrible, fearful
+
ὄνυξ
ónyx
claw, fingernail

Literally: terrible claw

The story of the word

John Ostrom named it in 1969, and the animal changed the field: agile, fast, plainly not a sluggish reptile, and close enough to birds to push that link back into the mainstream. The velociraptors of Jurassic Park are Deinonychus in everything but the name, which the novel borrowed from a smaller Mongolian cousin. The ὄνυξ in it is the same word as the gemstone onyx, named for looking like a fingernail.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
1969

Same family

onyxdinosaurparonychiaonychophagia

In a sentence

The Deinonychus mount is posed mid-stride with the killing claw held clear of the ground.

Built on the same root

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