chaetognatha
Definition
- 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
-
arrowworms: a group of small active transparent marine worms
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