Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of cystoidea is as below...

Crinoidea :: Crinoidea (n. pl.) A large class of Echinodermata, including numerous extinct families and genera, but comparatively few living ones. Most of the fossil species, like some that are recent, were attached by a jointed stem. See Blastoidea, Cystoidea, Comatula..

Cystoid :: Cystoid (n.) Alt. of Cystoidea.

Cystoidean :: Cystoidean (n.) Same as Cystidean.

Cystoidea :: Cystoidea (n.) Same as Cystidea.

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