Echinodermata
noun plural
Echi·no·der·ma·ta
-nə-ˈdər-mət-ə 
: a phylum of radially symmetrical coelomate marine animals consisting of the starfishes, sea urchins, and related forms
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“Echinodermata.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Echinodermata. Accessed 22 Dec. 2024.
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