ALL meanings of apatosaur
- noun apatosaur a large, long-necked, herbivorous dinosaur 3
- noun apatosaur A huge herbivorous dinosaur of the late Jurassic period, with a long neck and tail. 1
- noun apatosaur A large, herbivorous, gregarious sauropod dinosaur, of the genus Apatosaurus, from Jurassic North America; it had a long neck and tail. 0