Chaetognatha

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Definition
  1. Noun:
    • A phylum of marine invertebrates: "Chaetognatha" is the scientific name for a phylum of small, transparent, predatory marine worms commonly known as arrow worms. They are characterized by their streamlined, dart-like bodies and grasping spines on either side of the head.
Usage Examples
  • Noun:
    • The plankton sample was rich in Chaetognatha.
    • Chaetognatha are important predators in many marine food webs.
Advanced Usage
  • In taxonomic context: The term is used formally in biological classification to denote the entire phylum.
    • The phylum Chaetognatha is considered to be of uncertain phylogenetic placement.
Variants and Related Words
  • Chaetognath (noun): An individual organism belonging to the phylum Chaetognatha; an arrow worm.
    • A single chaetognath can consume numerous copepods daily.
  • Arrow worm (noun): The common name for organisms in the Chaetognatha.
    • Arrow worms are nearly transparent, making them difficult to see in the water.
Synonyms
  • Arrow worms: The common, non-scientific synonym for Chaetognatha.
Noun
  1. arrowworms: a group of small active transparent marine worms

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