| NOUN | animal | class Holothuroidea, Holothuroidea | class of echinoderms including the sea cucumbers |
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| Meaning | Class of echinoderms including the sea cucumbers. | |
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| Synonym | Holothuroidea | |
| Member of | Echinodermata, phylum Echinodermata | radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers |
| Members | Holothuridae, family Holothuridae | A family of Holothuroidea |
| sea cucumber, holothurian | echinoderm having a flexible sausage-shaped body, tentacles surrounding the mouth and tube feet | |
| Broader | class | (biology) a taxonomic group containing one or more orders |