(n.pl.) A class of Echinodermata including the true starfishes. The rays vary in number and always have ambulacral grooves below. The body is star-shaped or pentagonal.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). asteridea. Retrieved September 27, 2026, from http://smartdefine.org/asteridea/definitions/1976590 |
| Chicago | Webster's. 2011. "asteridea" http://smartdefine.org/asteridea/definitions/1976590 (accessed September 27, 2026). |
| Harvard | Webster's 2011, asteridea, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/asteridea/definitions/1976590>. |
| MLA | Webster's. "asteridea" 27 May 2011. Web. 27 September 2026. <http://smartdefine.org/asteridea/definitions/1976590> |