noun
- The jaw in vertebrates that is fused to the cranium.
- synonyms: upper jawbone, maxilla, maxillary
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). upper jaw. Retrieved September 20, 2026, from http://smartdefine.org/upper_jaw/definitions/1212253 |
| Chicago | WordNet. 2010. "upper jaw" http://smartdefine.org/upper_jaw/definitions/1212253 (accessed September 20, 2026). |
| Harvard | WordNet 2010, upper jaw, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/upper_jaw/definitions/1212253>. |
| MLA | WordNet. "upper jaw" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/upper_jaw/definitions/1212253> |