Definition

1. Noun:
   • A type of marine invertebrate animal: A holothurian is an echinoderm characterized by an elongated, flexible, often sausage-shaped body. It has tentacles surrounding its mouth and tube feet for locomotion. Holothurians are typically free-living organisms that feed on detritus and organic matter in mud or sediment on the seafloor.

Examples of Usage

• Noun:
  • The diver observed a holothurian slowly moving across the sandy ocean floor.
  • Holothurians are an important part of the deep-sea ecosystem.

Advanced Usage

• Scientific Context: The term is primarily used in zoological, marine biology, and ecological contexts to refer to animals of the class Holothuroidea.
  • The study focused on the population dynamics of holothurians in the coral reef.

Variants and Related Words

• Holothuroid (noun/adjective): Another term for a holothurian; relating to holothurians.
  • The holothuroid species displayed unique feeding behaviors.
• Holothuroidea (noun): The scientific class name encompassing all holothurians.
  • The phylum Echinodermata includes the class Holothuroidea.

Synonyms

• Sea cucumber: This is the common, non-scientific name for a holothurian.
  • The market sells dried sea cucumber, which is a processed holothurian.

Related Phrases

• Holothurian fishery: Refers to the commercial harvesting of sea cucumbers.
  • Regulations are needed to manage the sustainable holothurian fishery.

Noun

1. echinoderm having a flexible sausage-shaped body, tentacles surrounding the mouth and tube feet; free-living mud feeders