from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A very large herbivorous dinosaur of the genus Apatosaurus (formerly Brontosaurus) of the late Jurassic period, having a long neck and tail and a relatively small head.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A large, herbivorous, gregarious sauropod dinosaur, of the genus Apatosaurus, from Jurassic North America; it had a long neck and tail.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
New Latin Apatosaurus, unreal lizard, genus name : Greek apatē, untruth, lie + Greek sauros, lizard.(American Heritage® Dictionary of the English Language, Fourth Edition)