Definitions
from The Century Dictionary.
- A class of the phylum or subkingdom Echinodermata; the sea-urchins or sea-eggs.
from the GNU version of the Collaborative International Dictionary of English.
- noun plural (Zoöl.) 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 .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
class within thesuperclass Cryptosyringida — thesea urchins .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun sea urchins and sand dollars
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
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Examples
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These lowly animals belong to that group of the star-fish class (Echinodermata), the species of which possess generally spheroidal bodies, built up of multitudinous calcareous plates, and constitute the order Echinoidea.
On the Genesis of Species St. George Mivart
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The mouth of the Echinoidea, often referred to as Aristotle's Lantern because of the way he first described it, is located at the central most part of the animal's circular, spiny body.
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The '' 'Long-spined sea urchin' '' is a member of the class [[Echinoidea]], which has the literal meaning spiny skin.
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The '' 'Long-spined sea urchin' '' is a member of the class [[Echinoidea]], which has the literal meaning spiny skin.
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The '' 'Long-spined sea urchin' '' is a member of the class [[Echinoidea]], which has the literal meaning spiny skin.
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Echinoidea, which has the literal meaning spiny skin.
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