noun
- An Anglo-Saxon kingdom in northern England until 876. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). northumbria. Retrieved September 26, 2026, from http://smartdefine.org/northumbria/definitions/1225320 |
| Chicago | WordNet. 2010. "northumbria" http://smartdefine.org/northumbria/definitions/1225320 (accessed September 26, 2026). |
| Harvard | WordNet 2010, northumbria, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/northumbria/definitions/1225320>. |
| MLA | WordNet. "northumbria" 23 October 2010. Web. 26 September 2026. <http://smartdefine.org/northumbria/definitions/1225320> |