echinidea
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Echinidea — Echinoidea Ech i*noi de*a, n. pl. [NL. See {Echinus}, and { oid}.] (Zo[ o]l.) The class Echinodermata which includes the sea urchins. They have a calcareous shell, usually more or less spheroidal or disk shaped, composed of many united plates,… … The Collaborative International Dictionary of English
echinidea — ech·i·nid·ea … English syllables
Echinoida — Echinoidea Ech i*noi de*a, n. pl. [NL. See {Echinus}, and { oid}.] (Zo[ o]l.) The class Echinodermata which includes the sea urchins. They have a calcareous shell, usually more or less spheroidal or disk shaped, composed of many united plates,… … The Collaborative International Dictionary of English
Echinoidea — Ech i*noi de*a, n. pl. [NL. See {Echinus}, and { oid}.] (Zo[ o]l.) The class Echinodermata which includes the sea urchins. They have a calcareous shell, usually more or less spheroidal or disk shaped, composed of many united plates, and covered… … The Collaborative International Dictionary of English
