Amphibian (noun)

An animal of a class that includes frogs, toads, newts, and salamanders. They have smooth moist skin and typically breed in water, but live on land as adults.

Origin:

Early 18th century: from latin amphibium "double-lived creature" + -an.

Examples:

1. The amphibian exhibit at the zoo featured various species of frogs.
2. The newts in the pond were a type of amphibian.
3. The biology class studied the metamorphosis of amphibians.
4. Amphibians are an important indicator species for the health of an ecosystem.
5. The amphibian was able to survive on both land and in water.