Definition

Noun: 1. A deep-water wormlike mollusk: A solenogaster is a type of marine invertebrate animal that lives in deep water. Its body is elongated and resembles a worm. 2. Lacking calcareous plates but having spicules: Unlike some similar mollusks, it does not have hard, calcareous shell plates on its body. Instead, its covering mantle has very small, slimy, needle-like structures called spicules.

Usage Examples

• Scientists discovered a new species of solenogaster near the hydrothermal vents.
• The solenogaster is studied for its unique evolutionary position among mollusks.
• A defining feature of the solenogaster is the absence of a true shell.

Advanced Usage

• Taxonomic context: The term is often used in scientific literature on malacology (the study of mollusks) and deep-sea biology. It refers specifically to mollusks in the class Aplacophora, subclass Neomeniomorpha (Solenogastres).
  • The phylogenetic study focused on the digestive system of the solenogaster.

Variants and Related Words

• Solenogastres (plural noun): The scientific subclass name for this group of mollusks.
  • The subclass Solenogastres contains hundreds of described species.
• Aplacophoran (noun/adjective): A broader term for mollusks in the class Aplacophora, which includes both solenogasters and caudofoveates.
  • The aplacophoran body plan is highly simplified.

Synonyms

• Neomeniomorph (noun): A less common scientific synonym.
• Worm mollusk (noun): A descriptive, non-scientific term.

Notes on Meaning

This word has a single, highly specific zoological meaning. It is not used in everyday language and does not have idioms or phrasal verbs associated with it.

Noun

1. deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle