from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A very large carnivorous dinosaur of the Upper Cretaceous Period of North America, characterized by small forelimbs and a large head.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any large bipedal carnivorous dinosaur, of the family Tyrannosauridae, that lived in North America during the Cretaceous period.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; later Cretaceous period in North America
New Latin Tyrannosaurus, genus name : Greek turannos, tyrant + Greek sauros, lizard.(American Heritage® Dictionary of the English Language, Fourth Edition)