noun
- Flat sea urchins.
- synonyms: order Exocycloida
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Exocycloida. Retrieved September 30, 2026, from http://smartdefine.org/exocycloida/definitions/1199223 |
| Chicago | WordNet. 2010. "Exocycloida" http://smartdefine.org/exocycloida/definitions/1199223 (accessed September 30, 2026). |
| Harvard | WordNet 2010, Exocycloida, Smart Define, viewed 30 September, 2026, <http://smartdefine.org/exocycloida/definitions/1199223>. |
| MLA | WordNet. "Exocycloida" 23 October 2010. Web. 30 September 2026. <http://smartdefine.org/exocycloida/definitions/1199223> |