hydroid
/'haidrɔid/
Definition
- Noun:
- A type of colonial marine invertebrate belonging to the class Hydrozoa, characterized by having a life cycle in which the polyp (attached, asexual) stage is dominant. Hydroids often form branching, plant-like colonies.
Examples of Usage
- Noun:
- The marine biologist studied the delicate structure of the hydroid colony.
- Many hydroids are found attached to rocks, seaweed, or ship hulls.
Advanced Usage
- "Hydroid stage": Refers specifically to the polyp phase in the life cycle of certain cnidarians.
- The organism spends most of its life in the hydroid stage before developing into a medusa.
Variants and Related Words
- Hydrozoan (n): A broader term for any member of the class Hydrozoa, which includes hydroids.
- Jellyfish, siphonophores, and hydrozoans are all studied in marine biology.
- Hydroidolina (n): A taxonomic subclass within Hydrozoa that includes many hydroid species.
Synonyms
- Hydrozoan polyp: Specifically refers to the polyp form.
- Zoophyte: An older, less specific term for plant-like animals, which could include hydroids.
Related Phrases
- Hydroid colony: Describes the collective, interconnected structure formed by individual polyps.
- The hydroid colony provides shelter for small crustaceans.
Noun
-
colonial coelenterates having the polyp phase dominant
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