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Echinocystoida

plural noun
Echi·no·cys·toi·da | \ "+sə̇ˈstȯidə \

Definition of Echinocystoida 

: an order of Silurian fossil echinoids having small irregular spheroidal or flattened tests

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History and Etymology for Echinocystoida

New Latin, irregular from Echinocystites, fossil genus of Echinodermata (from echin- + -cystis + -ites -ite) + -oida

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Dictionary Entries near Echinocystoida

echinococcosis

echinococcus

echinocystis

Echinocystoida

echinoder

Echinodera

Echinoderes

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