holothurian
ho·lot·hu·rian
noun
1.
echinoderm having a flexible sausage-shaped body, tentacles surrounding the mouth and tube feet; free-living mud feeders: sea cucumbers
Origin
From Ancient Greek ὁλοθούριον (holothoúrion, “holothurium”).
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.