Asteroidea
Definition
- 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
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sea stars
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