Definition

1. Noun:
   • A class of vertebrates: Amphibia refers to a specific class within the animal kingdom, comprising vertebrates that typically have a life cycle involving both aquatic and terrestrial stages. They are cold-blooded (ectothermic) and usually have moist, permeable skin.

Usage

• The term "Amphibia" is used in scientific and biological contexts to classify a group of animals. It is often used with a singular verb when referring to the class as a whole.
  • Amphibia is a fascinating class for studying evolutionary biology.
  • The museum's exhibit features several species from the class Amphibia.

Examples

• Noun:
  • Frogs and salamanders are both members of the class Amphibia.
  • The study of Amphibia reveals much about the transition from water to land.

Advanced Usage

• "The world of Amphibia": A phrase used to refer collectively to all amphibians or their ecological realm.
  • This documentary explores the hidden world of Amphibia.

Variants and Related Words

• Amphibian (n): An individual animal belonging to the class Amphibia.
  • A frog is an amphibian.
• Amphibian (adj): Relating to or characteristic of amphibians.
  • The amphibian life cycle is complex.
• Amphibious (adj): Adapted for both land and water. (Note: This term is often used for vehicles or military operations, not strictly for the animal class).
  • The amphibious vehicle drove from the road into the lake.

Synonyms

• Amphibians: The common term for animals in this class.
• Herpetofauna (n): A broader term for reptiles and amphibians collectively.

Related Phrases

• Class Amphibia: The formal taxonomic designation.
  • The fossil record for Class Amphibia is extensive.

Noun

1. the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians