noun
- Huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic.
- synonyms: apatosaur, brontosaur, brontosaurus, thunder lizard, Apatosaurus excelsus
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). apatosaurus. Retrieved September 21, 2026, from http://smartdefine.org/apatosaurus/definitions/1326354 |
| Chicago | WordNet. 2010. "apatosaurus" http://smartdefine.org/apatosaurus/definitions/1326354 (accessed September 21, 2026). |
| Harvard | WordNet 2010, apatosaurus, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/apatosaurus/definitions/1326354>. |
| MLA | WordNet. "apatosaurus" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/apatosaurus/definitions/1326354> |