noun
- Any of a group of very small rod-shaped bacteria that live in biting arthropods (as ticks and mites) and cause disease in vertebrate hosts; they cause typhus and other febrile diseases in human beings. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). rickettsia. Retrieved September 20, 2026, from http://smartdefine.org/rickettsia/definitions/1194489 |
| Chicago | WordNet. 2010. "rickettsia" http://smartdefine.org/rickettsia/definitions/1194489 (accessed September 20, 2026). |
| Harvard | WordNet 2010, rickettsia, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/rickettsia/definitions/1194489>. |
| MLA | WordNet. "rickettsia" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/rickettsia/definitions/1194489> |