Echinidea

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, and covered with movable spines. See {Spatangoid}, {Clypeastroid}. [Written also {Echinidea}, and {Echinoida}.] [1913 Webster] ||

The Collaborative International Dictionary of English. 2000.

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Look at other dictionaries:

  • echinidea — ech·i·nid·ea …   English syllables

  • echinidea — ˌekəˈnidēə Etymology: New Latin, from Echinus + idea synonym of echinoidea …   Useful english dictionary

  • 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

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