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dinosaur

di·no·saur

dinosaur

 
pronunciation:
daI n sawr
features:
Word History, Word Explorer
part of speech: noun
definition: one of a group of extinct animals. Some kinds of dinosaurs were the largest animals that ever lived on land. Other dinosaurs were as small as chickens. The first kinds of dinosaurs developed over two hundred million years ago. The last kinds became extinct about sixty-five million years ago.
 
Word History
Dinosaur is formed from two Greek words that together mean "terrible lizard."
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