Annelida

/ə'nelidə/
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Definition
  1. Noun:
    • A major taxonomic class or phylum of segmented worms: "Annelida" refers to a large group of invertebrate animals characterized by their elongated, segmented bodies. This group includes familiar organisms such as earthworms, lugworms, and leeches.
Usage Examples
  • Noun:
    • The phylum Annelida includes over 22,000 species.
    • Earthworms, which belong to the Annelida, are vital for soil health.
    • The biologist studied the anatomy of various Annelida.
Advanced Usage
  • In taxonomic context: Used formally in biological classification to denote the phylum.
    • The specimen was definitively classified under Annelida based on its metameric segmentation.
Variants and Related Words
  • Annelid (n): An individual worm belonging to the phylum Annelida.
    • The beachcomber found a polychaete annelid in the sand.
  • Annelidan (adj): Of or relating to the annelids.
    • The annelidan circulatory system is closed.
Synonyms
  • Segmented worms: A descriptive synonym for the group.
  • Ringed worms: Another common name referring to their body segmentation.
Related Phrases
  • Phylum Annelida: The full taxonomic designation.
    • The course covered the key characteristics of Phylum Annelida.
Noun
  1. segmented worms: earthworms; lugworms; leeches

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