hydroid

/'haidrɔid/

Thân thiện

A hydroid colony grows on a submerged rock in a clear tide pool.

Definition

1. 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.

Học thuật

Noun

1. colonial coelenterates having the polyp phase dominant

Từ đồng nghĩa

• hydrozoan