Sea-urchin meaning

Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a rounded, radially symmetrical, calcareous skeleton covered with long spines.
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Any of various orders of echinoid echinoderms having a somewhat globular body of fused skeletal plates studded with long, calcareous, movable spines.
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Any of many marine echinoderms, of the class Echinoidea, commonly found in shallow water, having a complex chewing structure named Aristotle's lantern.
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Attributive form of sea urchin.

Sea-urchin look.

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Origin of sea-urchin

  • From sea + urchin (“hedgehog"). reflecting a similarity in appearance to the hedgehog.

    From Wiktionary