Echinoidea
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Ech·i·noi·dea | \ ˌek-ə-ˈnȯi-dē-ə 
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\Medical Definition of Echinoidea
: a class of motile bottom-dwelling echinoderms comprising the sea urchins and related forms
Other Words from Echinoidea
echinoid \ ˈek-ə-ˌnȯid \ noun
\ nounComments on Echinoidea
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