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Thesaurus: echinoidea

The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroi…

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seadefinitionurchinsdefinitionechinodermatadefinitioncalcareousdefinitionclassdefinitionclypeastroiddefinitioncomposeddefinitioncovereddefinitiondisk-shapeddefinitionincludesdefinitionlessdefinitionmovabledefinitionplatesdefinitionspheroidaldefinitionspinesdefinitionuniteddefinitionseedefinitionspatangoiddefinitiontheydefinitionwrittendefinitiondollarsdefinitionsanddefinitionechinococcusfamilyechinodermfamilyechinoderm familyfamilyechinoderm genusfamilyechinodermalfamilyechinodermatousfamily

Definitions

  1. n. pl. The class class="def-link" href="https://vividlex.com/word/echinodermata">Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid.
  2. The class class="def-link" href="https://vividlex.com/word/echinodermata">Echinodermata which includes the sea urchins. They have a calcareous, 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.]
  3. The class class="def-link" href="https://vividlex.com/word/echinodermata">Echinodermata which includes the sea urchins. Theyhave a calcareous, usually more or less spheroidal or disk-shaped,composed of many united plates, and covered with movable spines. SeeSpatangoid, Clypeastroid. [Written also Echinidea, and Echinoida.]
  4. n sea urchins and sand dollars