asteroidea

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Definition
  1. Noun:
    • A class of echinoderms: "Asteroidea" is the scientific class name for a group of marine invertebrates commonly known as sea stars or starfish. They are characterized by a central disc and typically five or more radiating arms.
Usage Examples
  • Noun:
    • The Asteroidea are known for their remarkable ability to regenerate lost arms. (The class Asteroidea is known for its remarkable ability to regenerate lost arms.)
    • Many species within the Asteroidea have a water vascular system used for locomotion. (Many species within the Asteroidea have a water vascular system used for locomotion.)
Advanced Usage
  • In taxonomic classification: The term is used in formal biological and zoological contexts to refer to the entire taxonomic class.
    • The phylogeny of the Asteroidea is a subject of ongoing research. (The evolutionary history of the class Asteroidea is a subject of ongoing research.)
Variants and Related Words
  • Asteroid (adj): Pertaining to or characteristic of the class Asteroidea.
    • The asteroid body plan is highly distinctive. (The starfish-like body plan is highly distinctive.)
  • Sea star (n): The common name for members of the class Asteroidea.
  • Starfish (n): A common, though increasingly discouraged, name for members of the Asteroidea, as they are not fish.
Synonyms
  • Sea stars: The most accurate common name synonym.
  • Starfish: A traditional but less scientifically precise synonym.
Related Phrases
  • "Member of the Asteroidea": A phrase used to specify an organism belonging to this class.
    • The common cushion star is a familiar member of the Asteroidea. (The common cushion star is a familiar member of the class Asteroidea.)
Noun
  1. sea stars

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