Etymology

dinosaur

di·no·saur
D2I1N1O1S1A1U1R1

Today it means: Those animals of the clade Dinosauria that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct. Full definition →

First used c. 1840Ancient Greek δεινός
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The story

  1. Ancient Greek · derived fromδεινός“terrible, awesome, mighty, fearfully great”
  2. English todaydinosaur

From Ancient Greek δεινός (deinós, “terrible, awesome, mighty, fearfully great”) + σαῦρος (saûros, “lizard, reptile”). Coined as Dinosaur(s) and Dinosauria by paleontologist Richard Owen in 1841/1842.

Words from the same roots

Ancient Greekδεινός all →

deinonychusdeinotheredinergatedino-

First known use, by meaning

  • from c. 1840 Those animals of the clade Dinosauria that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct.

Etymology from Wiktionary, CC BY-SA 4.0.