noun plural

Ech·​i·​noi·​dea ˌek-ə-ˈnȯi-dē-ə How to pronounce Echinoidea (audio)
: a class of motile bottom-dwelling echinoderms comprising the sea urchins and related forms
echinoid noun

Dictionary Entries Near Echinoidea

Cite this Entry

“Echinoidea.” Medical Dictionary, Merriam-Webster, Accessed 3 Feb. 2023.

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